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authorArnd Bergmann <arnd@arndb.de>2013-07-05 19:51:20 +0400
committerOlof Johansson <olof@lixom.net>2013-07-23 23:15:15 +0400
commita829abf8daa2dcf8223a9284b76d221e61130e13 (patch)
tree1adb4dfbecaf88fc6701d7148cd0743b0957e5c0
parentfe08bf9f46d6ae8e08de32d29234a2c928eebf8f (diff)
downloadlinux-a829abf8daa2dcf8223a9284b76d221e61130e13.tar.xz
ARM: pxa: propagate errors from regulator_enable() to pxamci
The em_x270_mci_setpower() and em_x270_usb_hub_init() functions call regulator_enable(), which may return an error that must be checked. This changes the em_x270_usb_hub_init() function to bail out if it fails, and changes the pxamci_platform_data->setpower callback so that the a failed em_x270_mci_setpower call can be propagated by the pxamci driver into the mmc core. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mike Rapoport <mike@compulab.co.il> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Acked-by: Chris Ball <cjb@laptop.org> [olof: fixed order of regulator_enable() and test in em_x270_usb_hub_init] Signed-off-by: Olof Johansson <olof@lixom.net>
-rw-r--r--arch/arm/mach-pxa/em-x270.c17
-rw-r--r--arch/arm/mach-pxa/mainstone.c3
-rw-r--r--arch/arm/mach-pxa/pcm990-baseboard.c3
-rw-r--r--arch/arm/mach-pxa/poodle.c4
-rw-r--r--arch/arm/mach-pxa/spitz.c4
-rw-r--r--arch/arm/mach-pxa/stargate2.c3
-rw-r--r--drivers/mmc/host/pxamci.c2
-rw-r--r--include/linux/platform_data/mmc-pxamci.h2
8 files changed, 27 insertions, 11 deletions
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index f6726bb4eb95..3a3362fa793e 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -477,16 +477,24 @@ static int em_x270_usb_hub_init(void)
/* USB Hub power-on and reset */
gpio_direction_output(usb_hub_reset, 1);
gpio_direction_output(GPIO9_USB_VBUS_EN, 0);
- regulator_enable(em_x270_usb_ldo);
+ err = regulator_enable(em_x270_usb_ldo);
+ if (err)
+ goto err_free_rst_gpio;
+
gpio_set_value(usb_hub_reset, 0);
gpio_set_value(usb_hub_reset, 1);
regulator_disable(em_x270_usb_ldo);
- regulator_enable(em_x270_usb_ldo);
+ err = regulator_enable(em_x270_usb_ldo);
+ if (err)
+ goto err_free_rst_gpio;
+
gpio_set_value(usb_hub_reset, 0);
gpio_set_value(GPIO9_USB_VBUS_EN, 1);
return 0;
+err_free_rst_gpio:
+ gpio_free(usb_hub_reset);
err_free_vbus_gpio:
gpio_free(GPIO9_USB_VBUS_EN);
err_free_usb_ldo:
@@ -592,7 +600,7 @@ err_irq:
return err;
}
-static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
+static int em_x270_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@@ -600,10 +608,11 @@ static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
int vdd_uV = (2000 + (vdd - __ffs(MMC_VDD_20_21)) * 100) * 1000;
regulator_set_voltage(em_x270_sdio_ldo, vdd_uV, vdd_uV);
- regulator_enable(em_x270_sdio_ldo);
+ return regulator_enable(em_x270_sdio_ldo);
} else {
regulator_disable(em_x270_sdio_ldo);
}
+ return 0;
}
static void em_x270_mci_exit(struct device *dev, void *data)
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index d2c652318376..dd70343c8708 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -408,7 +408,7 @@ static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_in
return err;
}
-static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
+static int mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@@ -420,6 +420,7 @@ static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
printk(KERN_DEBUG "%s: off\n", __func__);
MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
}
+ return 0;
}
static void mainstone_mci_exit(struct device *dev, void *data)
diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c
index fb7f1d1627dc..13e5b00eae90 100644
--- a/arch/arm/mach-pxa/pcm990-baseboard.c
+++ b/arch/arm/mach-pxa/pcm990-baseboard.c
@@ -335,7 +335,7 @@ static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
return err;
}
-static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
+static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data *p_d = dev->platform_data;
u8 val;
@@ -348,6 +348,7 @@ static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
val &= ~PCM990_CTRL_MMC2PWR;
pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
+ return 0;
}
static void pcm990_mci_exit(struct device *dev, void *data)
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 711d37e26bd8..aedf053a1de5 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -258,7 +258,7 @@ err_free_2:
return err;
}
-static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
+static int poodle_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@@ -270,6 +270,8 @@ static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
gpio_set_value(POODLE_GPIO_SD_PWR1, 0);
gpio_set_value(POODLE_GPIO_SD_PWR, 0);
}
+
+ return 0;
}
static void poodle_mci_exit(struct device *dev, void *data)
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 2125df0444e7..4c29173026e8 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -598,7 +598,7 @@ static inline void spitz_spi_init(void) {}
* NOTE: The card detect interrupt isn't debounced so we delay it by 250ms to
* give the card a chance to fully insert/eject.
*/
-static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
+static int spitz_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@@ -606,6 +606,8 @@ static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
spitz_card_pwr_ctrl(SCOOP_CPR_SD_3V, SCOOP_CPR_SD_3V);
else
spitz_card_pwr_ctrl(SCOOP_CPR_SD_3V, 0x0);
+
+ return 0;
}
static struct pxamci_platform_data spitz_mci_platform_data = {
diff --git a/arch/arm/mach-pxa/stargate2.c b/arch/arm/mach-pxa/stargate2.c
index 88fde43c948c..62aea3e835f3 100644
--- a/arch/arm/mach-pxa/stargate2.c
+++ b/arch/arm/mach-pxa/stargate2.c
@@ -734,9 +734,10 @@ static int stargate2_mci_init(struct device *dev,
*
* Very simple control. Either it is on or off and is controlled by
* a gpio pin */
-static void stargate2_mci_setpower(struct device *dev, unsigned int vdd)
+static int stargate2_mci_setpower(struct device *dev, unsigned int vdd)
{
gpio_set_value(SG2_SD_POWER_ENABLE, !!vdd);
+ return 0;
}
static void stargate2_mci_exit(struct device *dev, void *data)
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 847b1996ce8e..2c5a91bb8ec3 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -128,7 +128,7 @@ static inline int pxamci_set_power(struct pxamci_host *host,
!!on ^ host->pdata->gpio_power_invert);
}
if (!host->vcc && host->pdata && host->pdata->setpower)
- host->pdata->setpower(mmc_dev(host->mmc), vdd);
+ return host->pdata->setpower(mmc_dev(host->mmc), vdd);
return 0;
}
diff --git a/include/linux/platform_data/mmc-pxamci.h b/include/linux/platform_data/mmc-pxamci.h
index 9eb515bb799d..1706b3597ce0 100644
--- a/include/linux/platform_data/mmc-pxamci.h
+++ b/include/linux/platform_data/mmc-pxamci.h
@@ -12,7 +12,7 @@ struct pxamci_platform_data {
unsigned long detect_delay_ms; /* delay in millisecond before detecting cards after interrupt */
int (*init)(struct device *, irq_handler_t , void *);
int (*get_ro)(struct device *);
- void (*setpower)(struct device *, unsigned int);
+ int (*setpower)(struct device *, unsigned int);
void (*exit)(struct device *, void *);
int gpio_card_detect; /* gpio detecting card insertion */
int gpio_card_ro; /* gpio detecting read only toggle */