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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-04 05:57:49 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-04 05:57:49 +0300
commit7a53eea1f7b527fd3b6d7ca992914840981afe99 (patch)
tree35dfd7e14d5c44ae2d34e470aaaa68dbfec39324 /drivers/misc
parent597f03f9d133e9837d00965016170271d4f87dcf (diff)
parentc9fef1cc3dd3677633e6fd6ea5bd7ef3b741fab3 (diff)
downloadlinux-7a53eea1f7b527fd3b6d7ca992914840981afe99.tar.xz
Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here's the "big" char and misc driver update for 4.9-rc1. Lots of little things here, all over the driver tree for subsystems that flow through me. Nothing major that I can discern, full details are in the shortlog. All have been in the linux-next tree with no reported issues" * tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (144 commits) drivers/misc/hpilo: Changes to support new security states in iLO5 FW at25: fix debug and error messaging misc/genwqe: ensure zero initialization vme: fake: remove unexpected unlock in fake_master_set() vme: fake: mark symbols static where possible spmi: pmic-arb: Return an error code if sanity check fails Drivers: hv: get rid of id in struct vmbus_channel Drivers: hv: make VMBus bus ids persistent mcb: Add a dma_device to mcb_device mcb: Enable PCI bus mastering by default mei: stop the stall timer worker if not needed clk: probe common clock drivers earlier vme: fake: fix build for 64-bit dma_addr_t ttyprintk: Neaten and simplify printing mei: me: add kaby point device ids coresight: tmc: mark symbols static where possible coresight: perf: deal with error condition properly Drivers: hv: hv_util: Avoid dynamic allocation in time synch fpga manager: Add hardware dependency to Zynq driver Drivers: hv: utils: Support TimeSync version 4.0 protocol samples. ...
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/Kconfig28
-rw-r--r--drivers/misc/Makefile3
-rw-r--r--drivers/misc/bmp085-i2c.c83
-rw-r--r--drivers/misc/bmp085-spi.c79
-rw-r--r--drivers/misc/bmp085.c506
-rw-r--r--drivers/misc/bmp085.h33
-rw-r--r--drivers/misc/eeprom/at25.c20
-rw-r--r--drivers/misc/genwqe/card_base.c15
-rw-r--r--drivers/misc/genwqe/card_ddcb.c2
-rw-r--r--drivers/misc/genwqe/card_utils.c4
-rw-r--r--drivers/misc/hpilo.c17
-rw-r--r--drivers/misc/mei/amthif.c345
-rw-r--r--drivers/misc/mei/bus.c11
-rw-r--r--drivers/misc/mei/client.c190
-rw-r--r--drivers/misc/mei/client.h7
-rw-r--r--drivers/misc/mei/hbm.c49
-rw-r--r--drivers/misc/mei/hw-me-regs.h3
-rw-r--r--drivers/misc/mei/hw-me.c3
-rw-r--r--drivers/misc/mei/hw-txe.c3
-rw-r--r--drivers/misc/mei/init.c2
-rw-r--r--drivers/misc/mei/interrupt.c77
-rw-r--r--drivers/misc/mei/main.c58
-rw-r--r--drivers/misc/mei/mei_dev.h31
-rw-r--r--drivers/misc/mei/pci-me.c11
-rw-r--r--drivers/misc/mei/pci-txe.c7
-rw-r--r--drivers/misc/mic/scif/scif_dma.c6
-rw-r--r--drivers/misc/mic/scif/scif_mmap.c4
-rw-r--r--drivers/misc/pch_phub.c20
-rw-r--r--drivers/misc/vmw_vmci/vmci_host.c14
29 files changed, 365 insertions, 1266 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index d00252828966..64971baf11fa 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -429,34 +429,6 @@ config ARM_CHARLCD
line and the Linux version on the second line, but that's
still useful.
-config BMP085
- tristate
- depends on SYSFS
-
-config BMP085_I2C
- tristate "BMP085 digital pressure sensor on I2C"
- select BMP085
- select REGMAP_I2C
- depends on I2C && SYSFS
- help
- Say Y here if you want to support Bosch Sensortec's digital pressure
- sensor hooked to an I2C bus.
-
- To compile this driver as a module, choose M here: the
- module will be called bmp085-i2c.
-
-config BMP085_SPI
- tristate "BMP085 digital pressure sensor on SPI"
- select BMP085
- select REGMAP_SPI
- depends on SPI_MASTER && SYSFS
- help
- Say Y here if you want to support Bosch Sensortec's digital pressure
- sensor hooked to an SPI bus.
-
- To compile this driver as a module, choose M here: the
- module will be called bmp085-spi.
-
config PCH_PHUB
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) PHUB"
select GENERIC_NET_UTILS
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index fb32516ddfe2..31983366090a 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -9,9 +9,6 @@ obj-$(CONFIG_AD525X_DPOT_SPI) += ad525x_dpot-spi.o
obj-$(CONFIG_INTEL_MID_PTI) += pti.o
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
-obj-$(CONFIG_BMP085) += bmp085.o
-obj-$(CONFIG_BMP085_I2C) += bmp085-i2c.o
-obj-$(CONFIG_BMP085_SPI) += bmp085-spi.o
obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o
obj-$(CONFIG_ICS932S401) += ics932s401.o
obj-$(CONFIG_LKDTM) += lkdtm.o
diff --git a/drivers/misc/bmp085-i2c.c b/drivers/misc/bmp085-i2c.c
deleted file mode 100644
index f35c218aaa1a..000000000000
--- a/drivers/misc/bmp085-i2c.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/err.h>
-#include "bmp085.h"
-
-#define BMP085_I2C_ADDRESS 0x77
-
-static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
- I2C_CLIENT_END };
-
-static int bmp085_i2c_detect(struct i2c_client *client,
- struct i2c_board_info *info)
-{
- if (client->addr != BMP085_I2C_ADDRESS)
- return -ENODEV;
-
- return bmp085_detect(&client->dev);
-}
-
-static int bmp085_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int err;
- struct regmap *regmap = devm_regmap_init_i2c(client,
- &bmp085_regmap_config);
-
- if (IS_ERR(regmap)) {
- err = PTR_ERR(regmap);
- dev_err(&client->dev, "Failed to init regmap: %d\n", err);
- return err;
- }
-
- return bmp085_probe(&client->dev, regmap, client->irq);
-}
-
-static int bmp085_i2c_remove(struct i2c_client *client)
-{
- return bmp085_remove(&client->dev);
-}
-
-static const struct i2c_device_id bmp085_id[] = {
- { BMP085_NAME, 0 },
- { "bmp180", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, bmp085_id);
-
-static struct i2c_driver bmp085_i2c_driver = {
- .driver = {
- .name = BMP085_NAME,
- },
- .id_table = bmp085_id,
- .probe = bmp085_i2c_probe,
- .remove = bmp085_i2c_remove,
-
- .detect = bmp085_i2c_detect,
- .address_list = normal_i2c
-};
-
-module_i2c_driver(bmp085_i2c_driver);
-
-MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
-MODULE_DESCRIPTION("BMP085 I2C bus driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/misc/bmp085-spi.c b/drivers/misc/bmp085-spi.c
deleted file mode 100644
index 17ecbf95ff15..000000000000
--- a/drivers/misc/bmp085-spi.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/spi/spi.h>
-#include <linux/err.h>
-#include "bmp085.h"
-
-static int bmp085_spi_probe(struct spi_device *client)
-{
- int err;
- struct regmap *regmap;
-
- client->bits_per_word = 8;
- err = spi_setup(client);
- if (err < 0) {
- dev_err(&client->dev, "spi_setup failed!\n");
- return err;
- }
-
- regmap = devm_regmap_init_spi(client, &bmp085_regmap_config);
- if (IS_ERR(regmap)) {
- err = PTR_ERR(regmap);
- dev_err(&client->dev, "Failed to init regmap: %d\n", err);
- return err;
- }
-
- return bmp085_probe(&client->dev, regmap, client->irq);
-}
-
-static int bmp085_spi_remove(struct spi_device *client)
-{
- return bmp085_remove(&client->dev);
-}
-
-static const struct of_device_id bmp085_of_match[] = {
- { .compatible = "bosch,bmp085", },
- { },
-};
-MODULE_DEVICE_TABLE(of, bmp085_of_match);
-
-static const struct spi_device_id bmp085_id[] = {
- { "bmp180", 0 },
- { "bmp181", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(spi, bmp085_id);
-
-static struct spi_driver bmp085_spi_driver = {
- .driver = {
- .name = BMP085_NAME,
- .of_match_table = bmp085_of_match
- },
- .id_table = bmp085_id,
- .probe = bmp085_spi_probe,
- .remove = bmp085_spi_remove
-};
-
-module_spi_driver(bmp085_spi_driver);
-
-MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
-MODULE_DESCRIPTION("BMP085 SPI bus driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c
deleted file mode 100644
index 9b313f7810f5..000000000000
--- a/drivers/misc/bmp085.c
+++ /dev/null
@@ -1,506 +0,0 @@
-/* Copyright (c) 2010 Christoph Mair <christoph.mair@gmail.com>
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This driver supports the bmp085 and bmp18x digital barometric pressure
- * and temperature sensors from Bosch Sensortec. The datasheets
- * are available from their website:
- * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP085-DS000-05.pdf
- * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP180-DS000-07.pdf
- *
- * A pressure measurement is issued by reading from pressure0_input.
- * The return value ranges from 30000 to 110000 pascal with a resulution
- * of 1 pascal (0.01 millibar) which enables measurements from 9000m above
- * to 500m below sea level.
- *
- * The temperature can be read from temp0_input. Values range from
- * -400 to 850 representing the ambient temperature in degree celsius
- * multiplied by 10.The resolution is 0.1 celsius.
- *
- * Because ambient pressure is temperature dependent, a temperature
- * measurement will be executed automatically even if the user is reading
- * from pressure0_input. This happens if the last temperature measurement
- * has been executed more then one second ago.
- *
- * To decrease RMS noise from pressure measurements, the bmp085 can
- * autonomously calculate the average of up to eight samples. This is
- * set up by writing to the oversampling sysfs file. Accepted values
- * are 0, 1, 2 and 3. 2^x when x is the value written to this file
- * specifies the number of samples used to calculate the ambient pressure.
- * RMS noise is specified with six pascal (without averaging) and decreases
- * down to 3 pascal when using an oversampling setting of 3.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include "bmp085.h"
-#include <linux/interrupt.h>
-#include <linux/completion.h>
-#include <linux/gpio.h>
-
-#define BMP085_CHIP_ID 0x55
-#define BMP085_CALIBRATION_DATA_START 0xAA
-#define BMP085_CALIBRATION_DATA_LENGTH 11 /* 16 bit values */
-#define BMP085_CHIP_ID_REG 0xD0
-#define BMP085_CTRL_REG 0xF4
-#define BMP085_TEMP_MEASUREMENT 0x2E
-#define BMP085_PRESSURE_MEASUREMENT 0x34
-#define BMP085_CONVERSION_REGISTER_MSB 0xF6
-#define BMP085_CONVERSION_REGISTER_LSB 0xF7
-#define BMP085_CONVERSION_REGISTER_XLSB 0xF8
-#define BMP085_TEMP_CONVERSION_TIME 5
-
-struct bmp085_calibration_data {
- s16 AC1, AC2, AC3;
- u16 AC4, AC5, AC6;
- s16 B1, B2;
- s16 MB, MC, MD;
-};
-
-struct bmp085_data {
- struct device *dev;
- struct regmap *regmap;
- struct mutex lock;
- struct bmp085_calibration_data calibration;
- u8 oversampling_setting;
- u32 raw_temperature;
- u32 raw_pressure;
- u32 temp_measurement_period;
- unsigned long last_temp_measurement;
- u8 chip_id;
- s32 b6; /* calculated temperature correction coefficient */
- int irq;
- struct completion done;
-};
-
-static irqreturn_t bmp085_eoc_isr(int irq, void *devid)
-{
- struct bmp085_data *data = devid;
-
- complete(&data->done);
-
- return IRQ_HANDLED;
-}
-
-static s32 bmp085_read_calibration_data(struct bmp085_data *data)
-{
- u16 tmp[BMP085_CALIBRATION_DATA_LENGTH];
- struct bmp085_calibration_data *cali = &(data->calibration);
- s32 status = regmap_bulk_read(data->regmap,
- BMP085_CALIBRATION_DATA_START, (u8 *)tmp,
- (BMP085_CALIBRATION_DATA_LENGTH << 1));
- if (status < 0)
- return status;
-
- cali->AC1 = be16_to_cpu(tmp[0]);
- cali->AC2 = be16_to_cpu(tmp[1]);
- cali->AC3 = be16_to_cpu(tmp[2]);
- cali->AC4 = be16_to_cpu(tmp[3]);
- cali->AC5 = be16_to_cpu(tmp[4]);
- cali->AC6 = be16_to_cpu(tmp[5]);
- cali->B1 = be16_to_cpu(tmp[6]);
- cali->B2 = be16_to_cpu(tmp[7]);
- cali->MB = be16_to_cpu(tmp[8]);
- cali->MC = be16_to_cpu(tmp[9]);
- cali->MD = be16_to_cpu(tmp[10]);
- return 0;
-}
-
-static s32 bmp085_update_raw_temperature(struct bmp085_data *data)
-{
- u16 tmp;
- s32 status;
-
- mutex_lock(&data->lock);
-
- init_completion(&data->done);
-
- status = regmap_write(data->regmap, BMP085_CTRL_REG,
- BMP085_TEMP_MEASUREMENT);
- if (status < 0) {
- dev_err(data->dev,
- "Error while requesting temperature measurement.\n");
- goto exit;
- }
- wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies(
- BMP085_TEMP_CONVERSION_TIME));
-
- status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB,
- &tmp, sizeof(tmp));
- if (status < 0) {
- dev_err(data->dev,
- "Error while reading temperature measurement result\n");
- goto exit;
- }
- data->raw_temperature = be16_to_cpu(tmp);
- data->last_temp_measurement = jiffies;
- status = 0; /* everything ok, return 0 */
-
-exit:
- mutex_unlock(&data->lock);
- return status;
-}
-
-static s32 bmp085_update_raw_pressure(struct bmp085_data *data)
-{
- u32 tmp = 0;
- s32 status;
-
- mutex_lock(&data->lock);
-
- init_completion(&data->done);
-
- status = regmap_write(data->regmap, BMP085_CTRL_REG,
- BMP085_PRESSURE_MEASUREMENT +
- (data->oversampling_setting << 6));
- if (status < 0) {
- dev_err(data->dev,
- "Error while requesting pressure measurement.\n");
- goto exit;
- }
-
- /* wait for the end of conversion */
- wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies(
- 2+(3 << data->oversampling_setting)));
- /* copy data into a u32 (4 bytes), but skip the first byte. */
- status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB,
- ((u8 *)&tmp)+1, 3);
- if (status < 0) {
- dev_err(data->dev,
- "Error while reading pressure measurement results\n");
- goto exit;
- }
- data->raw_pressure = be32_to_cpu((tmp));
- data->raw_pressure >>= (8-data->oversampling_setting);
- status = 0; /* everything ok, return 0 */
-
-exit:
- mutex_unlock(&data->lock);
- return status;
-}
-
-/*
- * This function starts the temperature measurement and returns the value
- * in tenth of a degree celsius.
- */
-static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature)
-{
- struct bmp085_calibration_data *cali = &data->calibration;
- long x1, x2;
- int status;
-
- status = bmp085_update_raw_temperature(data);
- if (status < 0)
- goto exit;
-
- x1 = ((data->raw_temperature - cali->AC6) * cali->AC5) >> 15;
- x2 = (cali->MC << 11) / (x1 + cali->MD);
- data->b6 = x1 + x2 - 4000;
- /* if NULL just update b6. Used for pressure only measurements */
- if (temperature != NULL)
- *temperature = (x1+x2+8) >> 4;
-
-exit:
- return status;
-}
-
-/*
- * This function starts the pressure measurement and returns the value
- * in millibar. Since the pressure depends on the ambient temperature,
- * a temperature measurement is executed according to the given temperature
- * measurement period (default is 1 sec boundary). This period could vary
- * and needs to be adjusted according to the sensor environment, i.e. if big
- * temperature variations then the temperature needs to be read out often.
- */
-static s32 bmp085_get_pressure(struct bmp085_data *data, int *pressure)
-{
- struct bmp085_calibration_data *cali = &data->calibration;
- s32 x1, x2, x3, b3;
- u32 b4, b7;
- s32 p;
- int status;
-
- /* alt least every second force an update of the ambient temperature */
- if ((data->last_temp_measurement == 0) ||
- time_is_before_jiffies(data->last_temp_measurement + 1*HZ)) {
- status = bmp085_get_temperature(data, NULL);
- if (status < 0)
- return status;
- }
-
- status = bmp085_update_raw_pressure(data);
- if (status < 0)
- return status;
-
- x1 = (data->b6 * data->b6) >> 12;
- x1 *= cali->B2;
- x1 >>= 11;
-
- x2 = cali->AC2 * data->b6;
- x2 >>= 11;
-
- x3 = x1 + x2;
-
- b3 = (((((s32)cali->AC1) * 4 + x3) << data->oversampling_setting) + 2);
- b3 >>= 2;
-
- x1 = (cali->AC3 * data->b6) >> 13;
- x2 = (cali->B1 * ((data->b6 * data->b6) >> 12)) >> 16;
- x3 = (x1 + x2 + 2) >> 2;
- b4 = (cali->AC4 * (u32)(x3 + 32768)) >> 15;
-
- b7 = ((u32)data->raw_pressure - b3) *
- (50000 >> data->oversampling_setting);
- p = ((b7 < 0x80000000) ? ((b7 << 1) / b4) : ((b7 / b4) * 2));
-
- x1 = p >> 8;
- x1 *= x1;
- x1 = (x1 * 3038) >> 16;
- x2 = (-7357 * p) >> 16;
- p += (x1 + x2 + 3791) >> 4;
-
- *pressure = p;
-
- return 0;
-}
-
-/*
- * This function sets the chip-internal oversampling. Valid values are 0..3.
- * The chip will use 2^oversampling samples for internal averaging.
- * This influences the measurement time and the accuracy; larger values
- * increase both. The datasheet gives an overview on how measurement time,
- * accuracy and noise correlate.
- */
-static void bmp085_set_oversampling(struct bmp085_data *data,
- unsigned char oversampling)
-{
- if (oversampling > 3)
- oversampling = 3;
- data->oversampling_setting = oversampling;
-}
-
-/*
- * Returns the currently selected oversampling. Range: 0..3
- */
-static unsigned char bmp085_get_oversampling(struct bmp085_data *data)
-{
- return data->oversampling_setting;
-}
-
-/* sysfs callbacks */
-static ssize_t set_oversampling(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
- unsigned long oversampling;
- int err = kstrtoul(buf, 10, &oversampling);
-
- if (err == 0) {
- mutex_lock(&data->lock);
- bmp085_set_oversampling(data, oversampling);
- mutex_unlock(&data->lock);
- return count;
- }
-
- return err;
-}
-
-static ssize_t show_oversampling(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "%u\n", bmp085_get_oversampling(data));
-}
-static DEVICE_ATTR(oversampling, S_IWUSR | S_IRUGO,
- show_oversampling, set_oversampling);
-
-
-static ssize_t show_temperature(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int temperature;
- int status;
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- status = bmp085_get_temperature(data, &temperature);
- if (status < 0)
- return status;
- else
- return sprintf(buf, "%d\n", temperature);
-}
-static DEVICE_ATTR(temp0_input, S_IRUGO, show_temperature, NULL);
-
-
-static ssize_t show_pressure(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int pressure;
- int status;
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- status = bmp085_get_pressure(data, &pressure);
- if (status < 0)
- return status;
- else
- return sprintf(buf, "%d\n", pressure);
-}
-static DEVICE_ATTR(pressure0_input, S_IRUGO, show_pressure, NULL);
-
-
-static struct attribute *bmp085_attributes[] = {
- &dev_attr_temp0_input.attr,
- &dev_attr_pressure0_input.attr,
- &dev_attr_oversampling.attr,
- NULL
-};
-
-static const struct attribute_group bmp085_attr_group = {
- .attrs = bmp085_attributes,
-};
-
-int bmp085_detect(struct device *dev)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
- unsigned int id;
- int ret;
-
- ret = regmap_read(data->regmap, BMP085_CHIP_ID_REG, &id);
- if (ret < 0)
- return ret;
-
- if (id != data->chip_id)
- return -ENODEV;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(bmp085_detect);
-
-static void bmp085_get_of_properties(struct bmp085_data *data)
-{
-#ifdef CONFIG_OF
- struct device_node *np = data->dev->of_node;
- u32 prop;
-
- if (!np)
- return;
-
- if (!of_property_read_u32(np, "chip-id", &prop))
- data->chip_id = prop & 0xff;
-
- if (!of_property_read_u32(np, "temp-measurement-period", &prop))
- data->temp_measurement_period = (prop/100)*HZ;
-
- if (!of_property_read_u32(np, "default-oversampling", &prop))
- data->oversampling_setting = prop & 0xff;
-#endif
-}
-
-static int bmp085_init_client(struct bmp085_data *data)
-{
- int status = bmp085_read_calibration_data(data);
-
- if (status < 0)
- return status;
-
- /* default settings */
- data->chip_id = BMP085_CHIP_ID;
- data->last_temp_measurement = 0;
- data->temp_measurement_period = 1*HZ;
- data->oversampling_setting = 3;
-
- bmp085_get_of_properties(data);
-
- mutex_init(&data->lock);
-
- return 0;
-}
-
-struct regmap_config bmp085_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8
-};
-EXPORT_SYMBOL_GPL(bmp085_regmap_config);
-
-int bmp085_probe(struct device *dev, struct regmap *regmap, int irq)
-{
- struct bmp085_data *data;
- int err = 0;
-
- data = kzalloc(sizeof(struct bmp085_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
-
- dev_set_drvdata(dev, data);
- data->dev = dev;
- data->regmap = regmap;
- data->irq = irq;
-
- if (data->irq > 0) {
- err = devm_request_irq(dev, data->irq, bmp085_eoc_isr,
- IRQF_TRIGGER_RISING, "bmp085",
- data);
- if (err < 0)
- goto exit_free;
- }
-
- /* Initialize the BMP085 chip */
- err = bmp085_init_client(data);
- if (err < 0)
- goto exit_free;
-
- err = bmp085_detect(dev);
- if (err < 0) {
- dev_err(dev, "%s: chip_id failed!\n", BMP085_NAME);
- goto exit_free;
- }
-
- /* Register sysfs hooks */
- err = sysfs_create_group(&dev->kobj, &bmp085_attr_group);
- if (err)
- goto exit_free;
-
- dev_info(dev, "Successfully initialized %s!\n", BMP085_NAME);
-
- return 0;
-
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-EXPORT_SYMBOL_GPL(bmp085_probe);
-
-int bmp085_remove(struct device *dev)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- sysfs_remove_group(&data->dev->kobj, &bmp085_attr_group);
- kfree(data);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(bmp085_remove);
-
-MODULE_AUTHOR("Christoph Mair <christoph.mair@gmail.com>");
-MODULE_DESCRIPTION("BMP085 driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/misc/bmp085.h b/drivers/misc/bmp085.h
deleted file mode 100644
index 8b8e3b1f5ca5..000000000000
--- a/drivers/misc/bmp085.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _BMP085_H
-#define _BMP085_H
-
-#include <linux/regmap.h>
-
-#define BMP085_NAME "bmp085"
-
-extern struct regmap_config bmp085_regmap_config;
-
-int bmp085_probe(struct device *dev, struct regmap *regmap, int irq);
-int bmp085_remove(struct device *dev);
-int bmp085_detect(struct device *dev);
-
-#endif
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index 2c6c7c8e3ead..5afe4cd16569 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -121,9 +121,8 @@ static int at25_ee_read(void *priv, unsigned int offset,
* this chip is clocked very slowly
*/
status = spi_sync(at25->spi, &m);
- dev_dbg(&at25->spi->dev,
- "read %Zd bytes at %d --> %d\n",
- count, offset, (int) status);
+ dev_dbg(&at25->spi->dev, "read %zu bytes at %d --> %zd\n",
+ count, offset, status);
mutex_unlock(&at25->lock);
return status;
@@ -167,8 +166,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
*cp = AT25_WREN;
status = spi_write(at25->spi, cp, 1);
if (status < 0) {
- dev_dbg(&at25->spi->dev, "WREN --> %d\n",
- (int) status);
+ dev_dbg(&at25->spi->dev, "WREN --> %d\n", status);
break;
}
@@ -196,9 +194,8 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
memcpy(cp, buf, segment);
status = spi_write(at25->spi, bounce,
segment + at25->addrlen + 1);
- dev_dbg(&at25->spi->dev,
- "write %u bytes at %u --> %d\n",
- segment, offset, (int) status);
+ dev_dbg(&at25->spi->dev, "write %u bytes at %u --> %d\n",
+ segment, offset, status);
if (status < 0)
break;
@@ -225,8 +222,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
if ((sr < 0) || (sr & AT25_SR_nRDY)) {
dev_err(&at25->spi->dev,
- "write %d bytes offset %d, "
- "timeout after %u msecs\n",
+ "write %u bytes offset %u, timeout after %u msecs\n",
segment, offset,
jiffies_to_msecs(jiffies -
(timeout - EE_TIMEOUT)));
@@ -368,9 +364,7 @@ static int at25_probe(struct spi_device *spi)
return PTR_ERR(at25->nvmem);
dev_info(&spi->dev, "%d %s %s eeprom%s, pagesize %u\n",
- (chip.byte_len < 1024)
- ? chip.byte_len
- : (chip.byte_len / 1024),
+ (chip.byte_len < 1024) ? chip.byte_len : (chip.byte_len / 1024),
(chip.byte_len < 1024) ? "Byte" : "KByte",
at25->chip.name,
(chip.flags & EE_READONLY) ? " (readonly)" : "",
diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c
index a70b853fa2c9..6c1f49a85023 100644
--- a/drivers/misc/genwqe/card_base.c
+++ b/drivers/misc/genwqe/card_base.c
@@ -1351,6 +1351,19 @@ static struct pci_driver genwqe_driver = {
};
/**
+ * genwqe_devnode() - Set default access mode for genwqe devices.
+ *
+ * Default mode should be rw for everybody. Do not change default
+ * device name.
+ */
+static char *genwqe_devnode(struct device *dev, umode_t *mode)
+{
+ if (mode)
+ *mode = 0666;
+ return NULL;
+}
+
+/**
* genwqe_init_module() - Driver registration and initialization
*/
static int __init genwqe_init_module(void)
@@ -1363,6 +1376,8 @@ static int __init genwqe_init_module(void)
return -ENOMEM;
}
+ class_genwqe->devnode = genwqe_devnode;
+
debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL);
if (!debugfs_genwqe) {
rc = -ENOMEM;
diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c
index 353ee0cc733d..ddfeefe39540 100644
--- a/drivers/misc/genwqe/card_ddcb.c
+++ b/drivers/misc/genwqe/card_ddcb.c
@@ -1048,8 +1048,6 @@ static int setup_ddcb_queue(struct genwqe_dev *cd, struct ddcb_queue *queue)
"[%s] **err: could not allocate DDCB **\n", __func__);
return -ENOMEM;
}
- memset(queue->ddcb_vaddr, 0, queue_size);
-
queue->ddcb_req = kzalloc(sizeof(struct ddcb_requ *) *
queue->ddcb_max, GFP_KERNEL);
if (!queue->ddcb_req) {
diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
index 222367cc8c81..8a679ecc8fd1 100644
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -220,8 +220,8 @@ void *__genwqe_alloc_consistent(struct genwqe_dev *cd, size_t size,
if (get_order(size) > MAX_ORDER)
return NULL;
- return dma_alloc_coherent(&cd->pci_dev->dev, size, dma_handle,
- GFP_KERNEL);
+ return dma_zalloc_coherent(&cd->pci_dev->dev, size, dma_handle,
+ GFP_KERNEL);
}
void __genwqe_free_consistent(struct genwqe_dev *cd, size_t size,
diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c
index d6a901cd4222..fea8ff40440f 100644
--- a/drivers/misc/hpilo.c
+++ b/drivers/misc/hpilo.c
@@ -688,7 +688,8 @@ static void ilo_unmap_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
static int ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
{
- int error = -ENOMEM;
+ int bar;
+ unsigned long off;
/* map the memory mapped i/o registers */
hw->mmio_vaddr = pci_iomap(pdev, 1, 0);
@@ -698,7 +699,15 @@ static int ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
}
/* map the adapter shared memory region */
- hw->ram_vaddr = pci_iomap(pdev, 2, max_ccb * ILOHW_CCB_SZ);
+ if (pdev->subsystem_device == 0x00E4) {
+ bar = 5;
+ /* Last 8k is reserved for CCBs */
+ off = pci_resource_len(pdev, bar) - 0x2000;
+ } else {
+ bar = 2;
+ off = 0;
+ }
+ hw->ram_vaddr = pci_iomap_range(pdev, bar, off, max_ccb * ILOHW_CCB_SZ);
if (hw->ram_vaddr == NULL) {
dev_err(&pdev->dev, "Error mapping shared mem\n");
goto mmio_free;
@@ -717,7 +726,7 @@ ram_free:
mmio_free:
pci_iounmap(pdev, hw->mmio_vaddr);
out:
- return error;
+ return -ENOMEM;
}
static void ilo_remove(struct pci_dev *pdev)
@@ -899,7 +908,7 @@ static void __exit ilo_exit(void)
class_destroy(ilo_class);
}
-MODULE_VERSION("1.4.1");
+MODULE_VERSION("1.5.0");
MODULE_ALIAS(ILO_NAME);
MODULE_DESCRIPTION(ILO_NAME);
MODULE_AUTHOR("David Altobelli <david.altobelli@hpe.com>");
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index a039a5df6f21..7ae89b4a21d5 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -47,7 +47,6 @@ const uuid_le mei_amthif_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d,
void mei_amthif_reset_params(struct mei_device *dev)
{
/* reset iamthif parameters. */
- dev->iamthif_current_cb = NULL;
dev->iamthif_canceled = false;
dev->iamthif_state = MEI_IAMTHIF_IDLE;
dev->iamthif_stall_timer = 0;
@@ -67,8 +66,12 @@ int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
struct mei_cl *cl = &dev->iamthif_cl;
int ret;
- if (mei_cl_is_connected(cl))
- return 0;
+ mutex_lock(&dev->device_lock);
+
+ if (mei_cl_is_connected(cl)) {
+ ret = 0;
+ goto out;
+ }
dev->iamthif_state = MEI_IAMTHIF_IDLE;
@@ -77,179 +80,37 @@ int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
ret = mei_cl_link(cl);
if (ret < 0) {
dev_err(dev->dev, "amthif: failed cl_link %d\n", ret);
- return ret;
+ goto out;
}
ret = mei_cl_connect(cl, me_cl, NULL);
- return ret;
-}
-
-/**
- * mei_amthif_read - read data from AMTHIF client
- *
- * @dev: the device structure
- * @file: pointer to file object
- * @ubuf: pointer to user data in user space
- * @length: data length to read
- * @offset: data read offset
- *
- * Locking: called under "dev->device_lock" lock
- *
- * Return:
- * returned data length on success,
- * zero if no data to read,
- * negative on failure.
- */
-int mei_amthif_read(struct mei_device *dev, struct file *file,
- char __user *ubuf, size_t length, loff_t *offset)
-{
- struct mei_cl *cl = file->private_data;
- struct mei_cl_cb *cb;
- int rets;
- int wait_ret;
-
- dev_dbg(dev->dev, "checking amthif data\n");
- cb = mei_cl_read_cb(cl, file);
-
- /* Check for if we can block or not*/
- if (cb == NULL && file->f_flags & O_NONBLOCK)
- return -EAGAIN;
-
-
- dev_dbg(dev->dev, "waiting for amthif data\n");
- while (cb == NULL) {
- /* unlock the Mutex */
- mutex_unlock(&dev->device_lock);
-
- wait_ret = wait_event_interruptible(cl->rx_wait,
- !list_empty(&cl->rd_completed) ||
- !mei_cl_is_connected(cl));
-
- /* Locking again the Mutex */
- mutex_lock(&dev->device_lock);
-
- if (wait_ret)
- return -ERESTARTSYS;
-
- if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
- goto out;
- }
-
- cb = mei_cl_read_cb(cl, file);
- }
-
- if (cb->status) {
- rets = cb->status;
- dev_dbg(dev->dev, "read operation failed %d\n", rets);
- goto free;
- }
-
- dev_dbg(dev->dev, "Got amthif data\n");
- /* if the whole message will fit remove it from the list */
- if (cb->buf_idx >= *offset && length >= (cb->buf_idx - *offset))
- list_del_init(&cb->list);
- else if (cb->buf_idx <= *offset) {
- /* end of the message has been reached */
- list_del_init(&cb->list);
- rets = 0;
- goto free;
- }
- /* else means that not full buffer will be read and do not
- * remove message from deletion list
- */
-
- dev_dbg(dev->dev, "amthif cb->buf.size - %zu cb->buf_idx - %zu\n",
- cb->buf.size, cb->buf_idx);
-
- /* length is being truncated to PAGE_SIZE, however,
- * the buf_idx may point beyond */
- length = min_t(size_t, length, (cb->buf_idx - *offset));
-
- if (copy_to_user(ubuf, cb->buf.data + *offset, length)) {
- dev_dbg(dev->dev, "failed to copy data to userland\n");
- rets = -EFAULT;
- } else {
- rets = length;
- if ((*offset + length) < cb->buf_idx) {
- *offset += length;
- goto out;
- }
- }
-free:
- dev_dbg(dev->dev, "free amthif cb memory.\n");
- *offset = 0;
- mei_io_cb_free(cb);
out:
- return rets;
+ mutex_unlock(&dev->device_lock);
+ return ret;
}
/**
* mei_amthif_read_start - queue message for sending read credential
*
* @cl: host client
- * @file: file pointer of message recipient
+ * @fp: file pointer of message recipient
*
* Return: 0 on success, <0 on failure.
*/
-static int mei_amthif_read_start(struct mei_cl *cl, const struct file *file)
+static int mei_amthif_read_start(struct mei_cl *cl, const struct file *fp)
{
struct mei_device *dev = cl->dev;
struct mei_cl_cb *cb;
- int rets;
-
- cb = mei_io_cb_init(cl, MEI_FOP_READ, file);
- if (!cb) {
- rets = -ENOMEM;
- goto err;
- }
- rets = mei_io_cb_alloc_buf(cb, mei_cl_mtu(cl));
- if (rets)
- goto err;
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, fp);
+ if (!cb)
+ return -ENOMEM;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ cl->rx_flow_ctrl_creds++;
dev->iamthif_state = MEI_IAMTHIF_READING;
- dev->iamthif_fp = cb->fp;
- dev->iamthif_current_cb = cb;
-
- return 0;
-err:
- mei_io_cb_free(cb);
- return rets;
-}
-
-/**
- * mei_amthif_send_cmd - send amthif command to the ME
- *
- * @cl: the host client
- * @cb: mei call back struct
- *
- * Return: 0 on success, <0 on failure.
- */
-static int mei_amthif_send_cmd(struct mei_cl *cl, struct mei_cl_cb *cb)
-{
- struct mei_device *dev;
- int ret;
-
- if (!cl->dev || !cb)
- return -ENODEV;
-
- dev = cl->dev;
-
- dev->iamthif_state = MEI_IAMTHIF_WRITING;
- dev->iamthif_current_cb = cb;
- dev->iamthif_fp = cb->fp;
- dev->iamthif_canceled = false;
-
- ret = mei_cl_write(cl, cb, false);
- if (ret < 0)
- return ret;
-
- if (cb->completed)
- cb->status = mei_amthif_read_start(cl, cb->fp);
+ cl->fp = cb->fp;
return 0;
}
@@ -265,20 +126,32 @@ int mei_amthif_run_next_cmd(struct mei_device *dev)
{
struct mei_cl *cl = &dev->iamthif_cl;
struct mei_cl_cb *cb;
+ int ret;
dev->iamthif_canceled = false;
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- dev->iamthif_fp = NULL;
dev_dbg(dev->dev, "complete amthif cmd_list cb.\n");
cb = list_first_entry_or_null(&dev->amthif_cmd_list.list,
typeof(*cb), list);
- if (!cb)
+ if (!cb) {
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ cl->fp = NULL;
return 0;
+ }
list_del_init(&cb->list);
- return mei_amthif_send_cmd(cl, cb);
+ dev->iamthif_state = MEI_IAMTHIF_WRITING;
+ cl->fp = cb->fp;
+
+ ret = mei_cl_write(cl, cb, false);
+ if (ret < 0)
+ return ret;
+
+ if (cb->completed)
+ cb->status = mei_amthif_read_start(cl, cb->fp);
+
+ return 0;
}
/**
@@ -299,8 +172,7 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb)
/*
* The previous request is still in processing, queue this one.
*/
- if (dev->iamthif_state > MEI_IAMTHIF_IDLE &&
- dev->iamthif_state < MEI_IAMTHIF_READ_COMPLETE)
+ if (dev->iamthif_state != MEI_IAMTHIF_IDLE)
return 0;
return mei_amthif_run_next_cmd(dev);
@@ -309,7 +181,6 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb)
/**
* mei_amthif_poll - the amthif poll function
*
- * @dev: the device structure
* @file: pointer to file structure
* @wait: pointer to poll_table structure
*
@@ -317,26 +188,19 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb)
*
* Locking: called under "dev->device_lock" lock
*/
-
-unsigned int mei_amthif_poll(struct mei_device *dev,
- struct file *file, poll_table *wait)
+unsigned int mei_amthif_poll(struct file *file, poll_table *wait)
{
+ struct mei_cl *cl = file->private_data;
+ struct mei_cl_cb *cb = mei_cl_read_cb(cl, file);
unsigned int mask = 0;
- poll_wait(file, &dev->iamthif_cl.rx_wait, wait);
-
- if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE &&
- dev->iamthif_fp == file) {
-
+ poll_wait(file, &cl->rx_wait, wait);
+ if (cb)
mask |= POLLIN | POLLRDNORM;
- mei_amthif_run_next_cmd(dev);
- }
return mask;
}
-
-
/**
* mei_amthif_irq_write - write iamthif command in irq thread context.
*
@@ -393,7 +257,6 @@ int mei_amthif_irq_read_msg(struct mei_cl *cl,
return 0;
dev_dbg(dev->dev, "completed amthif read.\n ");
- dev->iamthif_current_cb = NULL;
dev->iamthif_stall_timer = 0;
return 0;
@@ -409,115 +272,63 @@ void mei_amthif_complete(struct mei_cl *cl, struct mei_cl_cb *cb)
{
struct mei_device *dev = cl->dev;
- if (cb->fop_type == MEI_FOP_WRITE) {
+ dev_dbg(dev->dev, "completing amthif call back.\n");
+ switch (cb->fop_type) {
+ case MEI_FOP_WRITE:
if (!cb->status) {
dev->iamthif_stall_timer = MEI_IAMTHIF_STALL_TIMER;
+ mei_schedule_stall_timer(dev);
mei_io_cb_free(cb);
return;
}
- /*
- * in case of error enqueue the write cb to complete read list
- * so it can be propagated to the reader
- */
- list_add_tail(&cb->list, &cl->rd_completed);
- wake_up_interruptible(&cl->rx_wait);
- return;
- }
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ cl->fp = NULL;
+ if (!dev->iamthif_canceled) {
+ /*
+ * in case of error enqueue the write cb to complete
+ * read list so it can be propagated to the reader
+ */
+ list_add_tail(&cb->list, &cl->rd_completed);
+ wake_up_interruptible(&cl->rx_wait);
+ } else {
+ mei_io_cb_free(cb);
+ }
+ break;
+ case MEI_FOP_READ:
+ if (!dev->iamthif_canceled) {
+ list_add_tail(&cb->list, &cl->rd_completed);
+ dev_dbg(dev->dev, "amthif read completed\n");
+ wake_up_interruptible(&cl->rx_wait);
+ } else {
+ mei_io_cb_free(cb);
+ }
- if (!dev->iamthif_canceled) {
- dev->iamthif_state = MEI_IAMTHIF_READ_COMPLETE;
dev->iamthif_stall_timer = 0;
- list_add_tail(&cb->list, &cl->rd_completed);
- dev_dbg(dev->dev, "amthif read completed\n");
- } else {
mei_amthif_run_next_cmd(dev);
+ break;
+ default:
+ WARN_ON(1);
}
-
- dev_dbg(dev->dev, "completing amthif call back.\n");
- wake_up_interruptible(&cl->rx_wait);
}
/**
* mei_clear_list - removes all callbacks associated with file
* from mei_cb_list
*
- * @dev: device structure.
* @file: file structure
* @mei_cb_list: callbacks list
*
* mei_clear_list is called to clear resources associated with file
* when application calls close function or Ctrl-C was pressed
- *
- * Return: true if callback removed from the list, false otherwise
*/
-static bool mei_clear_list(struct mei_device *dev,
- const struct file *file, struct list_head *mei_cb_list)
+static void mei_clear_list(const struct file *file,
+ struct list_head *mei_cb_list)
{
- struct mei_cl *cl = &dev->iamthif_cl;
struct mei_cl_cb *cb, *next;
- bool removed = false;
-
- /* list all list member */
- list_for_each_entry_safe(cb, next, mei_cb_list, list) {
- /* check if list member associated with a file */
- if (file == cb->fp) {
- /* check if cb equal to current iamthif cb */
- if (dev->iamthif_current_cb == cb) {
- dev->iamthif_current_cb = NULL;
- /* send flow control to iamthif client */
- mei_hbm_cl_flow_control_req(dev, cl);
- }
- /* free all allocated buffers */
- mei_io_cb_free(cb);
- removed = true;
- }
- }
- return removed;
-}
-/**
- * mei_clear_lists - removes all callbacks associated with file
- *
- * @dev: device structure
- * @file: file structure
- *
- * mei_clear_lists is called to clear resources associated with file
- * when application calls close function or Ctrl-C was pressed
- *
- * Return: true if callback removed from the list, false otherwise
- */
-static bool mei_clear_lists(struct mei_device *dev, const struct file *file)
-{
- bool removed = false;
- struct mei_cl *cl = &dev->iamthif_cl;
-
- /* remove callbacks associated with a file */
- mei_clear_list(dev, file, &dev->amthif_cmd_list.list);
- if (mei_clear_list(dev, file, &cl->rd_completed))
- removed = true;
-
- mei_clear_list(dev, file, &dev->ctrl_rd_list.list);
-
- if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list))
- removed = true;
-
- if (mei_clear_list(dev, file, &dev->write_waiting_list.list))
- removed = true;
-
- if (mei_clear_list(dev, file, &dev->write_list.list))
- removed = true;
-
- /* check if iamthif_current_cb not NULL */
- if (dev->iamthif_current_cb && !removed) {
- /* check file and iamthif current cb association */
- if (dev->iamthif_current_cb->fp == file) {
- /* remove cb */
- mei_io_cb_free(dev->iamthif_current_cb);
- dev->iamthif_current_cb = NULL;
- removed = true;
- }
- }
- return removed;
+ list_for_each_entry_safe(cb, next, mei_cb_list, list)
+ if (file == cb->fp)
+ mei_io_cb_free(cb);
}
/**
@@ -530,23 +341,21 @@ static bool mei_clear_lists(struct mei_device *dev, const struct file *file)
*/
int mei_amthif_release(struct mei_device *dev, struct file *file)
{
+ struct mei_cl *cl = file->private_data;
+
if (dev->iamthif_open_count > 0)
dev->iamthif_open_count--;
- if (dev->iamthif_fp == file &&
- dev->iamthif_state != MEI_IAMTHIF_IDLE) {
+ if (cl->fp == file && dev->iamthif_state != MEI_IAMTHIF_IDLE) {
dev_dbg(dev->dev, "amthif canceled iamthif state %d\n",
dev->iamthif_state);
dev->iamthif_canceled = true;
- if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) {
- dev_dbg(dev->dev, "run next amthif iamthif cb\n");
- mei_amthif_run_next_cmd(dev);
- }
}
- if (mei_clear_lists(dev, file))
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ mei_clear_list(file, &dev->amthif_cmd_list.list);
+ mei_clear_list(file, &cl->rd_completed);
+ mei_clear_list(file, &dev->ctrl_rd_list.list);
return 0;
}
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 1f33fea9299f..8cac7ef9ad0d 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -126,7 +126,8 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
goto out;
/* wait on event only if there is no other waiter */
- if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) {
+ /* synchronized under device mutex */
+ if (!waitqueue_active(&cl->rx_wait)) {
mutex_unlock(&bus->device_lock);
@@ -142,7 +143,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
mutex_lock(&bus->device_lock);
if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
+ rets = -ENODEV;
goto out;
}
}
@@ -234,7 +235,7 @@ static void mei_cl_bus_event_work(struct work_struct *work)
/* Prepare for the next read */
if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) {
mutex_lock(&bus->device_lock);
- mei_cl_read_start(cldev->cl, 0, NULL);
+ mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL);
mutex_unlock(&bus->device_lock);
}
}
@@ -324,7 +325,7 @@ int mei_cldev_register_event_cb(struct mei_cl_device *cldev,
if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) {
mutex_lock(&bus->device_lock);
- ret = mei_cl_read_start(cldev->cl, 0, NULL);
+ ret = mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL);
mutex_unlock(&bus->device_lock);
if (ret && ret != -EBUSY)
return ret;
@@ -983,12 +984,10 @@ void mei_cl_bus_rescan_work(struct work_struct *work)
container_of(work, struct mei_device, bus_rescan_work);
struct mei_me_client *me_cl;
- mutex_lock(&bus->device_lock);
me_cl = mei_me_cl_by_uuid(bus, &mei_amthif_guid);
if (me_cl)
mei_amthif_host_init(bus, me_cl);
mei_me_cl_put(me_cl);
- mutex_unlock(&bus->device_lock);
mei_cl_bus_rescan(bus);
}
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 641c1a566687..6fe02350578d 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -358,8 +358,9 @@ void mei_io_cb_free(struct mei_cl_cb *cb)
*
* Return: mei_cl_cb pointer or NULL;
*/
-struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
- const struct file *fp)
+static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl,
+ enum mei_cb_file_ops type,
+ const struct file *fp)
{
struct mei_cl_cb *cb;
@@ -420,32 +421,41 @@ static inline void mei_io_list_free(struct mei_cl_cb *list, struct mei_cl *cl)
}
/**
- * mei_io_cb_alloc_buf - allocate callback buffer
+ * mei_cl_alloc_cb - a convenient wrapper for allocating read cb
*
- * @cb: io callback structure
+ * @cl: host client
* @length: size of the buffer
+ * @type: operation type
+ * @fp: associated file pointer (might be NULL)
*
- * Return: 0 on success
- * -EINVAL if cb is NULL
- * -ENOMEM if allocation failed
+ * Return: cb on success and NULL on failure
*/
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length)
+struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops fop_type,
+ const struct file *fp)
{
+ struct mei_cl_cb *cb;
+
+ cb = mei_io_cb_init(cl, fop_type, fp);
if (!cb)
- return -EINVAL;
+ return NULL;
if (length == 0)
- return 0;
+ return cb;
cb->buf.data = kmalloc(length, GFP_KERNEL);
- if (!cb->buf.data)
- return -ENOMEM;
+ if (!cb->buf.data) {
+ mei_io_cb_free(cb);
+ return NULL;
+ }
cb->buf.size = length;
- return 0;
+
+ return cb;
}
/**
- * mei_cl_alloc_cb - a convenient wrapper for allocating read cb
+ * mei_cl_enqueue_ctrl_wr_cb - a convenient wrapper for allocating
+ * and enqueuing of the control commands cb
*
* @cl: host client
* @length: size of the buffer
@@ -453,22 +463,23 @@ int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length)
* @fp: associated file pointer (might be NULL)
*
* Return: cb on success and NULL on failure
+ * Locking: called under "dev->device_lock" lock
*/
-struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
- enum mei_cb_file_ops type,
- const struct file *fp)
+struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops fop_type,
+ const struct file *fp)
{
struct mei_cl_cb *cb;
- cb = mei_io_cb_init(cl, type, fp);
- if (!cb)
- return NULL;
+ /* for RX always allocate at least client's mtu */
+ if (length)
+ length = max_t(size_t, length, mei_cl_mtu(cl));
- if (mei_io_cb_alloc_buf(cb, length)) {
- mei_io_cb_free(cb);
+ cb = mei_cl_alloc_cb(cl, length, fop_type, fp);
+ if (!cb)
return NULL;
- }
+ list_add_tail(&cb->list, &cl->dev->ctrl_wr_list.list);
return cb;
}
@@ -754,7 +765,8 @@ void mei_cl_set_disconnected(struct mei_cl *cl)
mei_io_list_flush(&dev->ctrl_rd_list, cl);
mei_io_list_flush(&dev->ctrl_wr_list, cl);
mei_cl_wake_all(cl);
- cl->mei_flow_ctrl_creds = 0;
+ cl->rx_flow_ctrl_creds = 0;
+ cl->tx_flow_ctrl_creds = 0;
cl->timer_count = 0;
if (!cl->me_cl)
@@ -764,7 +776,7 @@ void mei_cl_set_disconnected(struct mei_cl *cl)
cl->me_cl->connect_count--;
if (cl->me_cl->connect_count == 0)
- cl->me_cl->mei_flow_ctrl_creds = 0;
+ cl->me_cl->tx_flow_ctrl_creds = 0;
mei_me_cl_put(cl->me_cl);
cl->me_cl = NULL;
@@ -814,6 +826,7 @@ static int mei_cl_send_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb)
list_move_tail(&cb->list, &dev->ctrl_rd_list.list);
cl->timer_count = MEI_CONNECT_TIMEOUT;
+ mei_schedule_stall_timer(dev);
return 0;
}
@@ -867,13 +880,11 @@ static int __mei_cl_disconnect(struct mei_cl *cl)
cl->state = MEI_FILE_DISCONNECTING;
- cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT, NULL);
- rets = cb ? 0 : -ENOMEM;
- if (rets)
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT, NULL);
+ if (!cb) {
+ rets = -ENOMEM;
goto out;
-
- cl_dbg(dev, cl, "add disconnect cb to control write list\n");
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ }
if (mei_hbuf_acquire(dev)) {
rets = mei_cl_send_disconnect(cl, cb);
@@ -1001,6 +1012,7 @@ static int mei_cl_send_connect(struct mei_cl *cl, struct mei_cl_cb *cb)
list_move_tail(&cb->list, &dev->ctrl_rd_list.list);
cl->timer_count = MEI_CONNECT_TIMEOUT;
+ mei_schedule_stall_timer(dev);
return 0;
}
@@ -1042,14 +1054,14 @@ int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
*
* @cl: host client
* @me_cl: me client
- * @file: pointer to file structure
+ * @fp: pointer to file structure
*
* Locking: called under "dev->device_lock" lock
*
* Return: 0 on success, <0 on failure.
*/
int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
- const struct file *file)
+ const struct file *fp)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
@@ -1076,12 +1088,11 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
goto nortpm;
}
- cb = mei_io_cb_init(cl, MEI_FOP_CONNECT, file);
- rets = cb ? 0 : -ENOMEM;
- if (rets)
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_CONNECT, fp);
+ if (!cb) {
+ rets = -ENOMEM;
goto out;
-
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ }
/* run hbuf acquire last so we don't have to undo */
if (!mei_cl_is_other_connecting(cl) && mei_hbuf_acquire(dev)) {
@@ -1159,50 +1170,42 @@ err:
return ERR_PTR(ret);
}
-
-
/**
- * mei_cl_flow_ctrl_creds - checks flow_control credits for cl.
+ * mei_cl_tx_flow_ctrl_creds - checks flow_control credits for cl.
*
* @cl: host client
- * @fp: the file pointer associated with the pointer
*
- * Return: 1 if mei_flow_ctrl_creds >0, 0 - otherwise.
+ * Return: 1 if tx_flow_ctrl_creds >0, 0 - otherwise.
*/
-static int mei_cl_flow_ctrl_creds(struct mei_cl *cl, const struct file *fp)
+static int mei_cl_tx_flow_ctrl_creds(struct mei_cl *cl)
{
- int rets;
-
if (WARN_ON(!cl || !cl->me_cl))
return -EINVAL;
- if (cl->mei_flow_ctrl_creds > 0)
+ if (cl->tx_flow_ctrl_creds > 0)
return 1;
- if (mei_cl_is_fixed_address(cl)) {
- rets = mei_cl_read_start(cl, mei_cl_mtu(cl), fp);
- if (rets && rets != -EBUSY)
- return rets;
+ if (mei_cl_is_fixed_address(cl))
return 1;
- }
if (mei_cl_is_single_recv_buf(cl)) {
- if (cl->me_cl->mei_flow_ctrl_creds > 0)
+ if (cl->me_cl->tx_flow_ctrl_creds > 0)
return 1;
}
return 0;
}
/**
- * mei_cl_flow_ctrl_reduce - reduces flow_control.
+ * mei_cl_tx_flow_ctrl_creds_reduce - reduces transmit flow control credits
+ * for a client
*
- * @cl: private data of the file object
+ * @cl: host client
*
* Return:
* 0 on success
* -EINVAL when ctrl credits are <= 0
*/
-static int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
+static int mei_cl_tx_flow_ctrl_creds_reduce(struct mei_cl *cl)
{
if (WARN_ON(!cl || !cl->me_cl))
return -EINVAL;
@@ -1211,13 +1214,13 @@ static int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
return 0;
if (mei_cl_is_single_recv_buf(cl)) {
- if (WARN_ON(cl->me_cl->mei_flow_ctrl_creds <= 0))
+ if (WARN_ON(cl->me_cl->tx_flow_ctrl_creds <= 0))
return -EINVAL;
- cl->me_cl->mei_flow_ctrl_creds--;
+ cl->me_cl->tx_flow_ctrl_creds--;
} else {
- if (WARN_ON(cl->mei_flow_ctrl_creds <= 0))
+ if (WARN_ON(cl->tx_flow_ctrl_creds <= 0))
return -EINVAL;
- cl->mei_flow_ctrl_creds--;
+ cl->tx_flow_ctrl_creds--;
}
return 0;
}
@@ -1292,7 +1295,7 @@ int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb,
* mei_cl_notify_request - send notification stop/start request
*
* @cl: host client
- * @file: associate request with file
+ * @fp: associate request with file
* @request: 1 for start or 0 for stop
*
* Locking: called under "dev->device_lock" lock
@@ -1300,7 +1303,7 @@ int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb,
* Return: 0 on such and error otherwise.
*/
int mei_cl_notify_request(struct mei_cl *cl,
- const struct file *file, u8 request)
+ const struct file *fp, u8 request)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
@@ -1325,7 +1328,7 @@ int mei_cl_notify_request(struct mei_cl *cl,
}
fop_type = mei_cl_notify_req2fop(request);
- cb = mei_io_cb_init(cl, fop_type, file);
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, fop_type, fp);
if (!cb) {
rets = -ENOMEM;
goto out;
@@ -1336,9 +1339,7 @@ int mei_cl_notify_request(struct mei_cl *cl,
rets = -ENODEV;
goto out;
}
- list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
- } else {
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ list_move_tail(&cb->list, &dev->ctrl_rd_list.list);
}
mutex_unlock(&dev->device_lock);
@@ -1436,25 +1437,6 @@ out:
}
/**
- * mei_cl_is_read_fc_cb - check if read cb is waiting for flow control
- * for given host client
- *
- * @cl: host client
- *
- * Return: true, if found at least one cb.
- */
-static bool mei_cl_is_read_fc_cb(struct mei_cl *cl)
-{
- struct mei_device *dev = cl->dev;
- struct mei_cl_cb *cb;
-
- list_for_each_entry(cb, &dev->ctrl_wr_list.list, list)
- if (cb->fop_type == MEI_FOP_READ && cb->cl == cl)
- return true;
- return false;
-}
-
-/**
* mei_cl_read_start - the start read client message function.
*
* @cl: host client
@@ -1477,26 +1459,22 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp)
if (!mei_cl_is_connected(cl))
return -ENODEV;
- /* HW currently supports only one pending read */
- if (!list_empty(&cl->rd_pending) || mei_cl_is_read_fc_cb(cl))
- return -EBUSY;
-
if (!mei_me_cl_is_active(cl->me_cl)) {
cl_err(dev, cl, "no such me client\n");
return -ENOTTY;
}
- /* always allocate at least client max message */
- length = max_t(size_t, length, mei_cl_mtu(cl));
- cb = mei_cl_alloc_cb(cl, length, MEI_FOP_READ, fp);
+ if (mei_cl_is_fixed_address(cl) || cl == &dev->iamthif_cl)
+ return 0;
+
+ /* HW currently supports only one pending read */
+ if (cl->rx_flow_ctrl_creds)
+ return -EBUSY;
+
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, fp);
if (!cb)
return -ENOMEM;
- if (mei_cl_is_fixed_address(cl)) {
- list_add_tail(&cb->list, &cl->rd_pending);
- return 0;
- }
-
rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
pm_runtime_put_noidle(dev->dev);
@@ -1504,16 +1482,15 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp)
goto nortpm;
}
+ rets = 0;
if (mei_hbuf_acquire(dev)) {
rets = mei_hbm_cl_flow_control_req(dev, cl);
if (rets < 0)
goto out;
- list_add_tail(&cb->list, &cl->rd_pending);
- } else {
- rets = 0;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ list_move_tail(&cb->list, &cl->rd_pending);
}
+ cl->rx_flow_ctrl_creds++;
out:
cl_dbg(dev, cl, "rpm: autosuspend\n");
@@ -1557,7 +1534,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
first_chunk = cb->buf_idx == 0;
- rets = first_chunk ? mei_cl_flow_ctrl_creds(cl, cb->fp) : 1;
+ rets = first_chunk ? mei_cl_tx_flow_ctrl_creds(cl) : 1;
if (rets < 0)
return rets;
@@ -1605,7 +1582,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
cb->completed = mei_hdr.msg_complete == 1;
if (first_chunk) {
- if (mei_cl_flow_ctrl_reduce(cl))
+ if (mei_cl_tx_flow_ctrl_creds_reduce(cl))
return -EIO;
}
@@ -1663,7 +1640,7 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking)
mei_hdr.msg_complete = 0;
mei_hdr.internal = cb->internal;
- rets = mei_cl_flow_ctrl_creds(cl, cb->fp);
+ rets = mei_cl_tx_flow_ctrl_creds(cl);
if (rets < 0)
goto err;
@@ -1691,7 +1668,7 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking)
if (rets)
goto err;
- rets = mei_cl_flow_ctrl_reduce(cl);
+ rets = mei_cl_tx_flow_ctrl_creds_reduce(cl);
if (rets)
goto err;
@@ -1761,6 +1738,9 @@ void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb)
case MEI_FOP_READ:
list_add_tail(&cb->list, &cl->rd_completed);
+ if (!mei_cl_is_fixed_address(cl) &&
+ !WARN_ON(!cl->rx_flow_ctrl_creds))
+ cl->rx_flow_ctrl_creds--;
if (!mei_cl_bus_rx_event(cl))
wake_up_interruptible(&cl->rx_wait);
break;
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 0d7a3a1fef78..d2bfabecd882 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -82,11 +82,7 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
/*
* MEI IO Functions
*/
-struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
- const struct file *fp);
void mei_io_cb_free(struct mei_cl_cb *priv_cb);
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length);
-
/**
* mei_io_list_init - Sets up a queue list.
@@ -118,6 +114,9 @@ void mei_cl_read_cb_flush(const struct mei_cl *cl, const struct file *fp);
struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
enum mei_cb_file_ops type,
const struct file *fp);
+struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops type,
+ const struct file *fp);
int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp);
/*
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 085f3aafe6fa..dd7f15a65eed 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -161,6 +161,7 @@ void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
* @dev: the device structure
* @cl: client
* @hbm_cmd: host bus message command
+ * @buf: message buffer
* @len: buffer length
*
* Return: 0 on success, <0 on failure.
@@ -276,6 +277,7 @@ int mei_hbm_start_req(struct mei_device *dev)
dev->hbm_state = MEI_HBM_STARTING;
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ mei_schedule_stall_timer(dev);
return 0;
}
@@ -311,6 +313,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev)
}
dev->hbm_state = MEI_HBM_ENUM_CLIENTS;
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ mei_schedule_stall_timer(dev);
return 0;
}
@@ -339,7 +342,7 @@ static int mei_hbm_me_cl_add(struct mei_device *dev,
me_cl->props = res->client_properties;
me_cl->client_id = res->me_addr;
- me_cl->mei_flow_ctrl_creds = 0;
+ me_cl->tx_flow_ctrl_creds = 0;
mei_me_cl_add(dev, me_cl);
@@ -561,6 +564,7 @@ static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx)
}
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ mei_schedule_stall_timer(dev);
return 0;
}
@@ -636,23 +640,22 @@ int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
}
/**
- * mei_hbm_add_single_flow_creds - adds single buffer credentials.
+ * mei_hbm_add_single_tx_flow_ctrl_creds - adds single buffer credentials.
*
* @dev: the device structure
- * @flow: flow control.
+ * @fctrl: flow control response bus message
*
* Return: 0 on success, < 0 otherwise
*/
-static int mei_hbm_add_single_flow_creds(struct mei_device *dev,
- struct hbm_flow_control *flow)
+static int mei_hbm_add_single_tx_flow_ctrl_creds(struct mei_device *dev,
+ struct hbm_flow_control *fctrl)
{
struct mei_me_client *me_cl;
int rets;
- me_cl = mei_me_cl_by_id(dev, flow->me_addr);
+ me_cl = mei_me_cl_by_id(dev, fctrl->me_addr);
if (!me_cl) {
- dev_err(dev->dev, "no such me client %d\n",
- flow->me_addr);
+ dev_err(dev->dev, "no such me client %d\n", fctrl->me_addr);
return -ENOENT;
}
@@ -661,9 +664,9 @@ static int mei_hbm_add_single_flow_creds(struct mei_device *dev,
goto out;
}
- me_cl->mei_flow_ctrl_creds++;
+ me_cl->tx_flow_ctrl_creds++;
dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n",
- flow->me_addr, me_cl->mei_flow_ctrl_creds);
+ fctrl->me_addr, me_cl->tx_flow_ctrl_creds);
rets = 0;
out:
@@ -675,24 +678,24 @@ out:
* mei_hbm_cl_flow_control_res - flow control response from me
*
* @dev: the device structure
- * @flow_control: flow control response bus message
+ * @fctrl: flow control response bus message
*/
-static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
- struct hbm_flow_control *flow_control)
+static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev,
+ struct hbm_flow_control *fctrl)
{
struct mei_cl *cl;
- if (!flow_control->host_addr) {
+ if (!fctrl->host_addr) {
/* single receive buffer */
- mei_hbm_add_single_flow_creds(dev, flow_control);
+ mei_hbm_add_single_tx_flow_ctrl_creds(dev, fctrl);
return;
}
- cl = mei_hbm_cl_find_by_cmd(dev, flow_control);
+ cl = mei_hbm_cl_find_by_cmd(dev, fctrl);
if (cl) {
- cl->mei_flow_ctrl_creds++;
+ cl->tx_flow_ctrl_creds++;
cl_dbg(dev, cl, "flow control creds = %d.\n",
- cl->mei_flow_ctrl_creds);
+ cl->tx_flow_ctrl_creds);
}
}
@@ -871,10 +874,10 @@ static int mei_hbm_fw_disconnect_req(struct mei_device *dev,
cl->state = MEI_FILE_DISCONNECTING;
cl->timer_count = 0;
- cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT_RSP, NULL);
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT_RSP,
+ NULL);
if (!cb)
return -ENOMEM;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}
return 0;
}
@@ -1022,7 +1025,7 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
struct mei_hbm_cl_cmd *cl_cmd;
struct hbm_client_connect_request *disconnect_req;
- struct hbm_flow_control *flow_control;
+ struct hbm_flow_control *fctrl;
/* read the message to our buffer */
BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
@@ -1102,8 +1105,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
case MEI_FLOW_CONTROL_CMD:
dev_dbg(dev->dev, "hbm: client flow control response: message received.\n");
- flow_control = (struct hbm_flow_control *) mei_msg;
- mei_hbm_cl_flow_control_res(dev, flow_control);
+ fctrl = (struct hbm_flow_control *)mei_msg;
+ mei_hbm_cl_tx_flow_ctrl_creds_res(dev, fctrl);
break;
case MEI_PG_ISOLATION_ENTRY_RES_CMD:
diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h
index 0dcb854b4bfc..7ad15d678878 100644
--- a/drivers/misc/mei/hw-me-regs.h
+++ b/drivers/misc/mei/hw-me-regs.h
@@ -125,6 +125,9 @@
#define MEI_DEV_ID_BXT_M 0x1A9A /* Broxton M */
#define MEI_DEV_ID_APL_I 0x5A9A /* Apollo Lake I */
+#define MEI_DEV_ID_KBP 0xA2BA /* Kaby Point */
+#define MEI_DEV_ID_KBP_2 0xA2BB /* Kaby Point 2 */
+
/*
* MEI HW Section
*/
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index dc3a854e02d3..56c2101e80ad 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -18,6 +18,7 @@
#include <linux/kthread.h>
#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
#include "mei_dev.h"
#include "hbm.h"
@@ -1063,6 +1064,8 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
}
}
+ pm_runtime_set_active(dev->dev);
+
hcsr = mei_hcsr_read(dev);
/* H_RST may be found lit before reset is started,
* for example if preceding reset flow hasn't completed.
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index 4a6c1b85f11e..e6e5e55a12ed 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/irqreturn.h>
+#include <linux/pm_runtime.h>
#include <linux/mei.h>
@@ -935,6 +936,8 @@ static int mei_txe_hw_start(struct mei_device *dev)
return ret;
}
+ pm_runtime_set_active(dev->dev);
+
/* enable input ready interrupts:
* SEC_IPC_HOST_INT_MASK.IPC_INPUT_READY_INT_MASK
*/
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index f7c8dfdb6a12..9a9c2484d107 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -94,7 +94,7 @@ void mei_cancel_work(struct mei_device *dev)
cancel_work_sync(&dev->reset_work);
cancel_work_sync(&dev->bus_rescan_work);
- cancel_delayed_work(&dev->timer_work);
+ cancel_delayed_work_sync(&dev->timer_work);
}
EXPORT_SYMBOL_GPL(mei_cancel_work);
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 3831a7ba2531..5a4893ce9c24 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -102,26 +102,25 @@ int mei_cl_irq_read_msg(struct mei_cl *cl,
{
struct mei_device *dev = cl->dev;
struct mei_cl_cb *cb;
- unsigned char *buffer = NULL;
size_t buf_sz;
cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list);
if (!cb) {
- cl_err(dev, cl, "pending read cb not found\n");
- goto out;
+ if (!mei_cl_is_fixed_address(cl)) {
+ cl_err(dev, cl, "pending read cb not found\n");
+ goto discard;
+ }
+ cb = mei_cl_alloc_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, cl->fp);
+ if (!cb)
+ goto discard;
+ list_add_tail(&cb->list, &cl->rd_pending);
}
if (!mei_cl_is_connected(cl)) {
cl_dbg(dev, cl, "not connected\n");
- cb->status = -ENODEV;
- goto out;
- }
-
- if (cb->buf.size == 0 || cb->buf.data == NULL) {
- cl_err(dev, cl, "response buffer is not allocated.\n");
list_move_tail(&cb->list, &complete_list->list);
- cb->status = -ENOMEM;
- goto out;
+ cb->status = -ENODEV;
+ goto discard;
}
buf_sz = mei_hdr->length + cb->buf_idx;
@@ -132,25 +131,19 @@ int mei_cl_irq_read_msg(struct mei_cl *cl,
list_move_tail(&cb->list, &complete_list->list);
cb->status = -EMSGSIZE;
- goto out;
+ goto discard;
}
if (cb->buf.size < buf_sz) {
cl_dbg(dev, cl, "message overflow. size %zu len %d idx %zu\n",
cb->buf.size, mei_hdr->length, cb->buf_idx);
- buffer = krealloc(cb->buf.data, buf_sz, GFP_KERNEL);
- if (!buffer) {
- cb->status = -ENOMEM;
- list_move_tail(&cb->list, &complete_list->list);
- goto out;
- }
- cb->buf.data = buffer;
- cb->buf.size = buf_sz;
+ list_move_tail(&cb->list, &complete_list->list);
+ cb->status = -EMSGSIZE;
+ goto discard;
}
- buffer = cb->buf.data + cb->buf_idx;
- mei_read_slots(dev, buffer, mei_hdr->length);
+ mei_read_slots(dev, cb->buf.data + cb->buf_idx, mei_hdr->length);
cb->buf_idx += mei_hdr->length;
@@ -162,10 +155,10 @@ int mei_cl_irq_read_msg(struct mei_cl *cl,
pm_request_autosuspend(dev->dev);
}
-out:
- if (!buffer)
- mei_irq_discard_msg(dev, mei_hdr);
+ return 0;
+discard:
+ mei_irq_discard_msg(dev, mei_hdr);
return 0;
}
@@ -216,6 +209,9 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
int slots;
int ret;
+ if (!list_empty(&cl->rd_pending))
+ return 0;
+
msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
slots = mei_hbuf_empty_slots(dev);
@@ -463,6 +459,19 @@ static void mei_connect_timeout(struct mei_cl *cl)
mei_reset(dev);
}
+#define MEI_STALL_TIMER_FREQ (2 * HZ)
+/**
+ * mei_schedule_stall_timer - re-arm stall_timer work
+ *
+ * Schedule stall timer
+ *
+ * @dev: the device structure
+ */
+void mei_schedule_stall_timer(struct mei_device *dev)
+{
+ schedule_delayed_work(&dev->timer_work, MEI_STALL_TIMER_FREQ);
+}
+
/**
* mei_timer - timer function.
*
@@ -472,10 +481,9 @@ static void mei_connect_timeout(struct mei_cl *cl)
void mei_timer(struct work_struct *work)
{
struct mei_cl *cl;
-
struct mei_device *dev = container_of(work,
struct mei_device, timer_work.work);
-
+ bool reschedule_timer = false;
mutex_lock(&dev->device_lock);
@@ -490,6 +498,7 @@ void mei_timer(struct work_struct *work)
mei_reset(dev);
goto out;
}
+ reschedule_timer = true;
}
}
@@ -504,6 +513,7 @@ void mei_timer(struct work_struct *work)
mei_connect_timeout(cl);
goto out;
}
+ reschedule_timer = true;
}
}
@@ -514,19 +524,16 @@ void mei_timer(struct work_struct *work)
if (--dev->iamthif_stall_timer == 0) {
dev_err(dev->dev, "timer: amthif hanged.\n");
mei_reset(dev);
- dev->iamthif_canceled = false;
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- mei_io_cb_free(dev->iamthif_current_cb);
- dev->iamthif_current_cb = NULL;
-
- dev->iamthif_fp = NULL;
mei_amthif_run_next_cmd(dev);
+ goto out;
}
+ reschedule_timer = true;
}
out:
- if (dev->dev_state != MEI_DEV_DISABLED)
- schedule_delayed_work(&dev->timer_work, 2 * HZ);
+ if (dev->dev_state != MEI_DEV_DISABLED && reschedule_timer)
+ mei_schedule_stall_timer(dev);
+
mutex_unlock(&dev->device_lock);
}
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 52635b063873..fa50635512e8 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -71,6 +71,7 @@ static int mei_open(struct inode *inode, struct file *file)
goto err_unlock;
}
+ cl->fp = file;
file->private_data = cl;
mutex_unlock(&dev->device_lock);
@@ -138,9 +139,8 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
struct mei_cl *cl = file->private_data;
struct mei_device *dev;
struct mei_cl_cb *cb = NULL;
+ bool nonblock = !!(file->f_flags & O_NONBLOCK);
int rets;
- int err;
-
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
@@ -164,11 +164,6 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
goto out;
}
- if (cl == &dev->iamthif_cl) {
- rets = mei_amthif_read(dev, file, ubuf, length, offset);
- goto out;
- }
-
cb = mei_cl_read_cb(cl, file);
if (cb)
goto copy_buffer;
@@ -176,24 +171,29 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
if (*offset > 0)
*offset = 0;
- err = mei_cl_read_start(cl, length, file);
- if (err && err != -EBUSY) {
- cl_dbg(dev, cl, "mei start read failure status = %d\n", err);
- rets = err;
+ rets = mei_cl_read_start(cl, length, file);
+ if (rets && rets != -EBUSY) {
+ cl_dbg(dev, cl, "mei start read failure status = %d\n", rets);
goto out;
}
- if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) {
- if (file->f_flags & O_NONBLOCK) {
- rets = -EAGAIN;
- goto out;
- }
+ if (nonblock) {
+ rets = -EAGAIN;
+ goto out;
+ }
+ if (rets == -EBUSY &&
+ !mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, file)) {
+ rets = -ENOMEM;
+ goto out;
+ }
+
+ do {
mutex_unlock(&dev->device_lock);
if (wait_event_interruptible(cl->rx_wait,
- (!list_empty(&cl->rd_completed)) ||
- (!mei_cl_is_connected(cl)))) {
+ (!list_empty(&cl->rd_completed)) ||
+ (!mei_cl_is_connected(cl)))) {
if (signal_pending(current))
return -EINTR;
@@ -202,16 +202,12 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
mutex_lock(&dev->device_lock);
if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
+ rets = -ENODEV;
goto out;
}
- }
- cb = mei_cl_read_cb(cl, file);
- if (!cb) {
- rets = 0;
- goto out;
- }
+ cb = mei_cl_read_cb(cl, file);
+ } while (!cb);
copy_buffer:
/* now copy the data to user space */
@@ -609,24 +605,24 @@ static unsigned int mei_poll(struct file *file, poll_table *wait)
goto out;
}
- if (cl == &dev->iamthif_cl) {
- mask = mei_amthif_poll(dev, file, wait);
- goto out;
- }
-
if (notify_en) {
poll_wait(file, &cl->ev_wait, wait);
if (cl->notify_ev)
mask |= POLLPRI;
}
+ if (cl == &dev->iamthif_cl) {
+ mask |= mei_amthif_poll(file, wait);
+ goto out;
+ }
+
if (req_events & (POLLIN | POLLRDNORM)) {
poll_wait(file, &cl->rx_wait, wait);
if (!list_empty(&cl->rd_completed))
mask |= POLLIN | POLLRDNORM;
else
- mei_cl_read_start(cl, 0, file);
+ mei_cl_read_start(cl, mei_cl_mtu(cl), file);
}
out:
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index e5e32503d4bc..1169fd9e7d02 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -80,18 +80,13 @@ const char *mei_dev_state_str(int state);
enum iamthif_states {
MEI_IAMTHIF_IDLE,
MEI_IAMTHIF_WRITING,
- MEI_IAMTHIF_FLOW_CONTROL,
MEI_IAMTHIF_READING,
- MEI_IAMTHIF_READ_COMPLETE
};
enum mei_file_transaction_states {
MEI_IDLE,
MEI_WRITING,
MEI_WRITE_COMPLETE,
- MEI_FLOW_CONTROL,
- MEI_READING,
- MEI_READ_COMPLETE
};
/**
@@ -146,7 +141,7 @@ struct mei_fw_status {
* @refcnt: struct reference count
* @props: client properties
* @client_id: me client id
- * @mei_flow_ctrl_creds: flow control credits
+ * @tx_flow_ctrl_creds: flow control credits
* @connect_count: number connections to this client
* @bus_added: added to bus
*/
@@ -155,7 +150,7 @@ struct mei_me_client {
struct kref refcnt;
struct mei_client_properties props;
u8 client_id;
- u8 mei_flow_ctrl_creds;
+ u8 tx_flow_ctrl_creds;
u8 connect_count;
u8 bus_added;
};
@@ -202,10 +197,11 @@ struct mei_cl_cb {
* @ev_async: event async notification
* @status: connection status
* @me_cl: fw client connected
+ * @fp: file associated with client
* @host_client_id: host id
- * @mei_flow_ctrl_creds: transmit flow credentials
+ * @tx_flow_ctrl_creds: transmit flow credentials
+ * @rx_flow_ctrl_creds: receive flow credentials
* @timer_count: watchdog timer for operation completion
- * @reserved: reserved for alignment
* @notify_en: notification - enabled/disabled
* @notify_ev: pending notification event
* @writing_state: state of the tx
@@ -225,10 +221,11 @@ struct mei_cl {
struct fasync_struct *ev_async;
int status;
struct mei_me_client *me_cl;
+ const struct file *fp;
u8 host_client_id;
- u8 mei_flow_ctrl_creds;
+ u8 tx_flow_ctrl_creds;
+ u8 rx_flow_ctrl_creds;
u8 timer_count;
- u8 reserved;
u8 notify_en;
u8 notify_ev;
enum mei_file_transaction_states writing_state;
@@ -400,9 +397,7 @@ const char *mei_pg_state_str(enum mei_pg_state state);
* @override_fixed_address: force allow fixed address behavior
*
* @amthif_cmd_list : amthif list for cmd waiting
- * @iamthif_fp : file for current amthif operation
* @iamthif_cl : amthif host client
- * @iamthif_current_cb : amthif current operation callback
* @iamthif_open_count : number of opened amthif connections
* @iamthif_stall_timer : timer to detect amthif hang
* @iamthif_state : amthif processor state
@@ -484,10 +479,7 @@ struct mei_device {
/* amthif list for cmd waiting */
struct mei_cl_cb amthif_cmd_list;
- /* driver managed amthif list for reading completed amthif cmd data */
- const struct file *iamthif_fp;
struct mei_cl iamthif_cl;
- struct mei_cl_cb *iamthif_current_cb;
long iamthif_open_count;
u32 iamthif_stall_timer;
enum iamthif_states iamthif_state;
@@ -556,6 +548,7 @@ void mei_cancel_work(struct mei_device *dev);
*/
void mei_timer(struct work_struct *work);
+void mei_schedule_stall_timer(struct mei_device *dev);
int mei_irq_read_handler(struct mei_device *dev,
struct mei_cl_cb *cmpl_list, s32 *slots);
@@ -569,11 +562,7 @@ void mei_amthif_reset_params(struct mei_device *dev);
int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl);
-int mei_amthif_read(struct mei_device *dev, struct file *file,
- char __user *ubuf, size_t length, loff_t *offset);
-
-unsigned int mei_amthif_poll(struct mei_device *dev,
- struct file *file, poll_table *wait);
+unsigned int mei_amthif_poll(struct file *file, poll_table *wait);
int mei_amthif_release(struct mei_device *dev, struct file *file);
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 71cea9b296b2..f3ffd883b232 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -91,6 +91,9 @@ static const struct pci_device_id mei_me_pci_tbl[] = {
{MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)},
{MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)},
+ {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, mei_me_pch8_cfg)},
+ {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, mei_me_pch8_cfg)},
+
/* required last entry */
{0, }
};
@@ -217,8 +220,6 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_drvdata(pdev, dev);
- schedule_delayed_work(&dev->timer_work, HZ);
-
/*
* For not wake-able HW runtime pm framework
* can't be used on pci device level.
@@ -400,6 +401,9 @@ static int mei_me_pm_runtime_suspend(struct device *device)
dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret);
+ if (ret && ret != -EAGAIN)
+ schedule_work(&dev->reset_work);
+
return ret;
}
@@ -423,6 +427,9 @@ static int mei_me_pm_runtime_resume(struct device *device)
dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret);
+ if (ret)
+ schedule_work(&dev->reset_work);
+
return ret;
}
diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c
index 30cc30683c07..58ffd30dcc91 100644
--- a/drivers/misc/mei/pci-txe.c
+++ b/drivers/misc/mei/pci-txe.c
@@ -347,6 +347,10 @@ static int mei_txe_pm_runtime_suspend(struct device *device)
dev_dbg(&pdev->dev, "rpm: txe: runtime suspend ret=%d\n", ret);
mutex_unlock(&dev->device_lock);
+
+ if (ret && ret != -EAGAIN)
+ schedule_work(&dev->reset_work);
+
return ret;
}
@@ -372,6 +376,9 @@ static int mei_txe_pm_runtime_resume(struct device *device)
dev_dbg(&pdev->dev, "rpm: txe: runtime resume ret = %d\n", ret);
+ if (ret)
+ schedule_work(&dev->reset_work);
+
return ret;
}
diff --git a/drivers/misc/mic/scif/scif_dma.c b/drivers/misc/mic/scif/scif_dma.c
index cd01a0efda6b..64d5760d069a 100644
--- a/drivers/misc/mic/scif/scif_dma.c
+++ b/drivers/misc/mic/scif/scif_dma.c
@@ -115,7 +115,6 @@ int scif_reserve_dma_chan(struct scif_endpt *ep)
*/
static
void __scif_rma_destroy_tcw(struct scif_mmu_notif *mmn,
- struct scif_endpt *ep,
u64 start, u64 len)
{
struct list_head *item, *tmp;
@@ -128,7 +127,6 @@ void __scif_rma_destroy_tcw(struct scif_mmu_notif *mmn,
list_for_each_safe(item, tmp, &mmn->tc_reg_list) {
window = list_entry(item, struct scif_window, list);
- ep = (struct scif_endpt *)window->ep;
if (!len)
break;
start_va = window->va_for_temp;
@@ -146,7 +144,7 @@ static void scif_rma_destroy_tcw(struct scif_mmu_notif *mmn, u64 start, u64 len)
struct scif_endpt *ep = mmn->ep;
spin_lock(&ep->rma_info.tc_lock);
- __scif_rma_destroy_tcw(mmn, ep, start, len);
+ __scif_rma_destroy_tcw(mmn, start, len);
spin_unlock(&ep->rma_info.tc_lock);
}
@@ -169,7 +167,7 @@ static void __scif_rma_destroy_tcw_ep(struct scif_endpt *ep)
spin_lock(&ep->rma_info.tc_lock);
list_for_each_safe(item, tmp, &ep->rma_info.mmn_list) {
mmn = list_entry(item, struct scif_mmu_notif, list);
- __scif_rma_destroy_tcw(mmn, ep, 0, ULONG_MAX);
+ __scif_rma_destroy_tcw(mmn, 0, ULONG_MAX);
}
spin_unlock(&ep->rma_info.tc_lock);
}
diff --git a/drivers/misc/mic/scif/scif_mmap.c b/drivers/misc/mic/scif/scif_mmap.c
index 49cb8f7b4672..928211677079 100644
--- a/drivers/misc/mic/scif/scif_mmap.c
+++ b/drivers/misc/mic/scif/scif_mmap.c
@@ -552,7 +552,7 @@ static void scif_munmap(struct vm_area_struct *vma)
{
struct scif_endpt *ep;
struct vma_pvt *vmapvt = vma->vm_private_data;
- int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int nr_pages = vma_pages(vma);
s64 offset;
struct scif_rma_req req;
struct scif_window *window = NULL;
@@ -614,7 +614,7 @@ int scif_mmap(struct vm_area_struct *vma, scif_epd_t epd)
struct scif_window *window = NULL;
struct scif_endpt *ep = (struct scif_endpt *)epd;
s64 start_offset = vma->vm_pgoff << PAGE_SHIFT;
- int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int nr_pages = vma_pages(vma);
int err;
struct vma_pvt *vmapvt;
diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index 4810e039bbec..e42bdc90fa27 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -28,6 +28,7 @@
#include <linux/if_ether.h>
#include <linux/ctype.h>
#include <linux/dmi.h>
+#include <linux/of.h>
#define PHUB_STATUS 0x00 /* Status Register offset */
#define PHUB_CONTROL 0x04 /* Control Register offset */
@@ -57,6 +58,7 @@
/* CM-iTC */
#define CLKCFG_UART_48MHZ (1 << 16)
+#define CLKCFG_UART_25MHZ (2 << 16)
#define CLKCFG_BAUDDIV (2 << 20)
#define CLKCFG_PLL2VCO (8 << 9)
#define CLKCFG_UARTCLKSEL (1 << 18)
@@ -711,6 +713,12 @@ static int pch_phub_probe(struct pci_dev *pdev,
if (id->driver_data == 1) { /* EG20T PCH */
const char *board_name;
+ unsigned int prefetch = 0x000affaa;
+
+ if (pdev->dev.of_node)
+ of_property_read_u32(pdev->dev.of_node,
+ "intel,eg20t-prefetch",
+ &prefetch);
ret = sysfs_create_file(&pdev->dev.kobj,
&dev_attr_pch_mac.attr);
@@ -736,11 +744,21 @@ static int pch_phub_probe(struct pci_dev *pdev,
CLKCFG_UART_MASK);
/* set the prefech value */
- iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
+ iowrite32(prefetch, chip->pch_phub_base_address + 0x14);
/* set the interrupt delay value */
iowrite32(0x25, chip->pch_phub_base_address + 0x44);
chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
+
+ /* quirk for MIPS Boston platform */
+ if (pdev->dev.of_node) {
+ if (of_machine_is_compatible("img,boston")) {
+ pch_phub_read_modify_write_reg(chip,
+ (unsigned int)CLKCFG_REG_OFFSET,
+ CLKCFG_UART_25MHZ,
+ CLKCFG_UART_MASK);
+ }
+ }
} else if (id->driver_data == 2) { /* ML7213 IOH */
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
if (ret)
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 9ec262a52656..ec090105eb4b 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -381,18 +381,12 @@ static int vmci_host_do_send_datagram(struct vmci_host_dev *vmci_host_dev,
return -EINVAL;
}
- dg = kmalloc(send_info.len, GFP_KERNEL);
- if (!dg) {
+ dg = memdup_user((void __user *)(uintptr_t)send_info.addr,
+ send_info.len);
+ if (IS_ERR(dg)) {
vmci_ioctl_err(
"cannot allocate memory to dispatch datagram\n");
- return -ENOMEM;
- }
-
- if (copy_from_user(dg, (void __user *)(uintptr_t)send_info.addr,
- send_info.len)) {
- vmci_ioctl_err("error getting datagram\n");
- kfree(dg);
- return -EFAULT;
+ return PTR_ERR(dg);
}
if (VMCI_DG_SIZE(dg) != send_info.len) {