From 5784ee4dcbb896f5367855540b264e21a0c33854 Mon Sep 17 00:00:00 2001 From: Dong Aisheng Date: Mon, 15 Oct 2012 15:50:25 +0800 Subject: regmap: select REGMAP if REGMAP_MMIO and REGMAP_IRQ enabled The regmap_mmio and regmap_irq depend on regmap core, if not select, we may not compile regmap core and meet compiling errors as follows if REGMAP_MMIO is selected by client drivers: drivers/mfd/syscon.c:94:15: error: variable 'syscon_regmap_config' has initializer but incomplete type drivers/mfd/syscon.c:95:2: error: unknown field 'reg_bits' specified in initializer drivers/mfd/syscon.c:95:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:95:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c:96:2: error: unknown field 'val_bits' specified in initializer drivers/mfd/syscon.c:96:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:96:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c:97:2: error: unknown field 'reg_stride' specified in initializer drivers/mfd/syscon.c:97:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:97:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c: In function 'syscon_probe': drivers/mfd/syscon.c:124:2: error: invalid use of undefined type 'struct regmap_config' drivers/mfd/syscon.c:125:2: error: implicit declaration of function 'devm_regmap_init_mmio' [-Werror=implicit-function-declaration] drivers/mfd/syscon.c:125:17: warning: assignment makes pointer from integer without a cast [enabled by default] cc1: some warnings being treated as errors drivers/mfd/Kconfig: config MFD_SYSCON bool "System Controller Register R/W Based on Regmap" depends on OF select REGMAP_MMIO help Select this option to enable accessing system control registers via regmap. Signed-off-by: Dong Aisheng Signed-off-by: Mark Brown --- drivers/base/regmap/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig index 6be390bd8bd1..f0d30543fcce 100644 --- a/drivers/base/regmap/Kconfig +++ b/drivers/base/regmap/Kconfig @@ -3,7 +3,7 @@ # subsystems should select the appropriate symbols. config REGMAP - default y if (REGMAP_I2C || REGMAP_SPI) + default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_MMIO || REGMAP_IRQ) select LZO_COMPRESS select LZO_DECOMPRESS select IRQ_DOMAIN if REGMAP_IRQ -- cgit v1.2.3 From 373304fe10fc46e68815c7116709ad292695dfd1 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 9 Oct 2012 12:01:01 +0800 Subject: firmware loader: cancel uncache work before caching firmware Under 'Opportunistic sleep' situation, system sleep might be triggered very frequently, so the uncahce work may not be completed before caching firmware during next suspend. This patch cancels the uncache work before caching firmware to fix the problem above. Also this patch optimizes the cacheing firmware mechanism a bit by only storing one firmware cache entry for one firmware image. So if the firmware is still cached during suspend, it doesn't need to be loaded from user space any more. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/base/firmware_class.c | 35 ++++++++++++++++++++++++++++------- 1 file changed, 28 insertions(+), 7 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 81541452887b..d06a8d0534bf 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -1142,17 +1142,27 @@ exit: return fce; } -static int fw_cache_piggyback_on_request(const char *name) +static int __fw_entry_found(const char *name) { struct firmware_cache *fwc = &fw_cache; struct fw_cache_entry *fce; - int ret = 0; - spin_lock(&fwc->name_lock); list_for_each_entry(fce, &fwc->fw_names, list) { if (!strcmp(fce->name, name)) - goto found; + return 1; } + return 0; +} + +static int fw_cache_piggyback_on_request(const char *name) +{ + struct firmware_cache *fwc = &fw_cache; + struct fw_cache_entry *fce; + int ret = 0; + + spin_lock(&fwc->name_lock); + if (__fw_entry_found(name)) + goto found; fce = alloc_fw_cache_entry(name); if (fce) { @@ -1229,11 +1239,19 @@ static void dev_cache_fw_image(struct device *dev, void *data) list_del(&fce->list); spin_lock(&fwc->name_lock); - fwc->cnt++; - list_add(&fce->list, &fwc->fw_names); + /* only one cache entry for one firmware */ + if (!__fw_entry_found(fce->name)) { + fwc->cnt++; + list_add(&fce->list, &fwc->fw_names); + } else { + free_fw_cache_entry(fce); + fce = NULL; + } spin_unlock(&fwc->name_lock); - async_schedule(__async_dev_cache_fw_image, (void *)fce); + if (fce) + async_schedule(__async_dev_cache_fw_image, + (void *)fce); } } @@ -1275,6 +1293,9 @@ static void device_cache_fw_images(void) pr_debug("%s\n", __func__); + /* cancel uncache work */ + cancel_delayed_work_sync(&fwc->work); + /* * use small loading timeout for caching devices' firmware * because all these firmware images have been loaded -- cgit v1.2.3 From 253c9240ee09fd2a05d315ea44ac037a893d8981 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 9 Oct 2012 12:01:02 +0800 Subject: firmware loader: fix one reqeust_firmware race Several loading requests may be pending on one same firmware buf, and this patch moves fw_map_pages_buf() before complete_all(&fw_buf->completion) and let all requests see the mapped 'buf->data' once the loading is completed. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/base/firmware_class.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index d06a8d0534bf..f2882511a9c1 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -423,6 +423,18 @@ static void firmware_free_data(const struct firmware *fw) #ifndef PAGE_KERNEL_RO #define PAGE_KERNEL_RO PAGE_KERNEL #endif + +/* one pages buffer should be mapped/unmapped only once */ +static int fw_map_pages_buf(struct firmware_buf *buf) +{ + if (buf->data) + vunmap(buf->data); + buf->data = vmap(buf->pages, buf->nr_pages, 0, PAGE_KERNEL_RO); + if (!buf->data) + return -ENOMEM; + return 0; +} + /** * firmware_loading_store - set value in the 'loading' control file * @dev: device pointer @@ -467,6 +479,14 @@ static ssize_t firmware_loading_store(struct device *dev, if (test_bit(FW_STATUS_LOADING, &fw_buf->status)) { set_bit(FW_STATUS_DONE, &fw_buf->status); clear_bit(FW_STATUS_LOADING, &fw_buf->status); + + /* + * Several loading requests may be pending on + * one same firmware buf, so let all requests + * see the mapped 'buf->data' once the loading + * is completed. + * */ + fw_map_pages_buf(fw_buf); complete_all(&fw_buf->completion); break; } @@ -670,15 +690,6 @@ exit: return fw_priv; } -/* one pages buffer is mapped/unmapped only once */ -static int fw_map_pages_buf(struct firmware_buf *buf) -{ - buf->data = vmap(buf->pages, buf->nr_pages, 0, PAGE_KERNEL_RO); - if (!buf->data) - return -ENOMEM; - return 0; -} - /* store the pages buffer info firmware from buf */ static void fw_set_page_data(struct firmware_buf *buf, struct firmware *fw) { @@ -884,9 +895,6 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, if (!retval && f_dev->parent) fw_add_devm_name(f_dev->parent, buf->fw_id); - if (!retval) - retval = fw_map_pages_buf(buf); - /* * After caching firmware image is started, let it piggyback * on request firmware. -- cgit v1.2.3 From 746058f4304343507e48d39f80d7a3b0d8550e3a Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 9 Oct 2012 12:01:03 +0800 Subject: firmware loader: let direct loading back on 'firmware_buf' Firstly 'firmware_buf' is introduced to make all loading requests to share one firmware kernel buffer, so firmware_buf should be used in direct loading for saving memory and speedup firmware loading. Secondly, the commit below abb139e75c2cdbb955e840d6331cb5863e409d0e(firmware:teach the kernel to load firmware files directly from the filesystem) introduces direct loading for fixing udev regression, but it bypasses the firmware cache meachnism, so this patch enables caching firmware for direct loading case since it is still needed to solve drivers' dependency during system resume. Cc: Linus Torvalds Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/base/firmware_class.c | 171 ++++++++++++++++++++++++------------------ 1 file changed, 100 insertions(+), 71 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index f2882511a9c1..a095d84ddfd9 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -36,68 +36,6 @@ MODULE_AUTHOR("Manuel Estrada Sainz"); MODULE_DESCRIPTION("Multi purpose firmware loading support"); MODULE_LICENSE("GPL"); -static const char *fw_path[] = { - "/lib/firmware/updates/" UTS_RELEASE, - "/lib/firmware/updates", - "/lib/firmware/" UTS_RELEASE, - "/lib/firmware" -}; - -/* Don't inline this: 'struct kstat' is biggish */ -static noinline long fw_file_size(struct file *file) -{ - struct kstat st; - if (vfs_getattr(file->f_path.mnt, file->f_path.dentry, &st)) - return -1; - if (!S_ISREG(st.mode)) - return -1; - if (st.size != (long)st.size) - return -1; - return st.size; -} - -static bool fw_read_file_contents(struct file *file, struct firmware *fw) -{ - long size; - char *buf; - - size = fw_file_size(file); - if (size < 0) - return false; - buf = vmalloc(size); - if (!buf) - return false; - if (kernel_read(file, 0, buf, size) != size) { - vfree(buf); - return false; - } - fw->data = buf; - fw->size = size; - return true; -} - -static bool fw_get_filesystem_firmware(struct firmware *fw, const char *name) -{ - int i; - bool success = false; - char *path = __getname(); - - for (i = 0; i < ARRAY_SIZE(fw_path); i++) { - struct file *file; - snprintf(path, PATH_MAX, "%s/%s", fw_path[i], name); - - file = filp_open(path, O_RDONLY, 0); - if (IS_ERR(file)) - continue; - success = fw_read_file_contents(file, fw); - fput(file); - if (success) - break; - } - __putname(path); - return success; -} - /* Builtin firmware support */ #ifdef CONFIG_FW_LOADER @@ -150,6 +88,11 @@ enum { FW_STATUS_ABORT, }; +enum fw_buf_fmt { + VMALLOC_BUF, /* used in direct loading */ + PAGE_BUF, /* used in loading via userspace */ +}; + static int loading_timeout = 60; /* In seconds */ static inline long firmware_loading_timeout(void) @@ -187,6 +130,7 @@ struct firmware_buf { struct completion completion; struct firmware_cache *fwc; unsigned long status; + enum fw_buf_fmt fmt; void *data; size_t size; struct page **pages; @@ -240,6 +184,7 @@ static struct firmware_buf *__allocate_fw_buf(const char *fw_name, strcpy(buf->fw_id, fw_name); buf->fwc = fwc; init_completion(&buf->completion); + buf->fmt = VMALLOC_BUF; pr_debug("%s: fw-%s buf=%p\n", __func__, fw_name, buf); @@ -307,10 +252,14 @@ static void __fw_free_buf(struct kref *ref) list_del(&buf->list); spin_unlock(&fwc->lock); - vunmap(buf->data); - for (i = 0; i < buf->nr_pages; i++) - __free_page(buf->pages[i]); - kfree(buf->pages); + + if (buf->fmt == PAGE_BUF) { + vunmap(buf->data); + for (i = 0; i < buf->nr_pages; i++) + __free_page(buf->pages[i]); + kfree(buf->pages); + } else + vfree(buf->data); kfree(buf); } @@ -319,6 +268,69 @@ static void fw_free_buf(struct firmware_buf *buf) kref_put(&buf->ref, __fw_free_buf); } +/* direct firmware loading support */ +static const char *fw_path[] = { + "/lib/firmware/updates/" UTS_RELEASE, + "/lib/firmware/updates", + "/lib/firmware/" UTS_RELEASE, + "/lib/firmware" +}; + +/* Don't inline this: 'struct kstat' is biggish */ +static noinline long fw_file_size(struct file *file) +{ + struct kstat st; + if (vfs_getattr(file->f_path.mnt, file->f_path.dentry, &st)) + return -1; + if (!S_ISREG(st.mode)) + return -1; + if (st.size != (long)st.size) + return -1; + return st.size; +} + +static bool fw_read_file_contents(struct file *file, struct firmware_buf *fw_buf) +{ + long size; + char *buf; + + size = fw_file_size(file); + if (size < 0) + return false; + buf = vmalloc(size); + if (!buf) + return false; + if (kernel_read(file, 0, buf, size) != size) { + vfree(buf); + return false; + } + fw_buf->data = buf; + fw_buf->size = size; + return true; +} + +static bool fw_get_filesystem_firmware(struct firmware_buf *buf) +{ + int i; + bool success = false; + char *path = __getname(); + + for (i = 0; i < ARRAY_SIZE(fw_path); i++) { + struct file *file; + snprintf(path, PATH_MAX, "%s/%s", fw_path[i], buf->fw_id); + + file = filp_open(path, O_RDONLY, 0); + if (IS_ERR(file)) + continue; + success = fw_read_file_contents(file, buf); + fput(file); + if (success) + break; + } + __putname(path); + return success; +} + static struct firmware_priv *to_firmware_priv(struct device *dev) { return container_of(dev, struct firmware_priv, dev); @@ -427,6 +439,9 @@ static void firmware_free_data(const struct firmware *fw) /* one pages buffer should be mapped/unmapped only once */ static int fw_map_pages_buf(struct firmware_buf *buf) { + if (buf->fmt != PAGE_BUF) + return 0; + if (buf->data) vunmap(buf->data); buf->data = vmap(buf->pages, buf->nr_pages, 0, PAGE_KERNEL_RO); @@ -789,11 +804,6 @@ _request_firmware_prepare(const struct firmware **firmware_p, const char *name, return NULL; } - if (fw_get_filesystem_firmware(firmware, name)) { - dev_dbg(device, "firmware: direct-loading firmware %s\n", name); - return NULL; - } - ret = fw_lookup_and_allocate_buf(name, &fw_cache, &buf); if (!ret) fw_priv = fw_create_instance(firmware, name, device, @@ -843,6 +853,21 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, struct device *f_dev = &fw_priv->dev; struct firmware_buf *buf = fw_priv->buf; struct firmware_cache *fwc = &fw_cache; + int direct_load = 0; + + /* try direct loading from fs first */ + if (fw_get_filesystem_firmware(buf)) { + dev_dbg(f_dev->parent, "firmware: direct-loading" + " firmware %s\n", buf->fw_id); + + set_bit(FW_STATUS_DONE, &buf->status); + complete_all(&buf->completion); + direct_load = 1; + goto handle_fw; + } + + /* fall back on userspace loading */ + buf->fmt = PAGE_BUF; dev_set_uevent_suppress(f_dev, true); @@ -881,6 +906,7 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, del_timer_sync(&fw_priv->timeout); +handle_fw: mutex_lock(&fw_lock); if (!buf->size || test_bit(FW_STATUS_ABORT, &buf->status)) retval = -ENOENT; @@ -910,6 +936,9 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, fw_priv->buf = NULL; mutex_unlock(&fw_lock); + if (direct_load) + goto err_put_dev; + device_remove_file(f_dev, &dev_attr_loading); err_del_bin_attr: device_remove_bin_file(f_dev, &firmware_attr_data); -- cgit v1.2.3 From d28d3882bd1fdb88ae4e02f11b091a92b0e5068b Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 9 Oct 2012 12:01:04 +0800 Subject: firmware loader: sync firmware cache by async_synchronize_full_domain async.c has provided synchronization mechanism on async_schedule_*, so use async_synchronize_full_domain to sync caching firmware instead of reinventing the wheel. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/base/firmware_class.c | 34 ++++++---------------------------- 1 file changed, 6 insertions(+), 28 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index a095d84ddfd9..8945f4e489ed 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -116,8 +116,6 @@ struct firmware_cache { spinlock_t name_lock; struct list_head fw_names; - wait_queue_head_t wait_queue; - int cnt; struct delayed_work work; struct notifier_block pm_notify; @@ -1166,6 +1164,8 @@ int uncache_firmware(const char *fw_name) } #ifdef CONFIG_PM_SLEEP +static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain); + static struct fw_cache_entry *alloc_fw_cache_entry(const char *name) { struct fw_cache_entry *fce; @@ -1232,12 +1232,6 @@ static void __async_dev_cache_fw_image(void *fw_entry, free_fw_cache_entry(fce); } - - spin_lock(&fwc->name_lock); - fwc->cnt--; - spin_unlock(&fwc->name_lock); - - wake_up(&fwc->wait_queue); } /* called with dev->devres_lock held */ @@ -1278,7 +1272,6 @@ static void dev_cache_fw_image(struct device *dev, void *data) spin_lock(&fwc->name_lock); /* only one cache entry for one firmware */ if (!__fw_entry_found(fce->name)) { - fwc->cnt++; list_add(&fce->list, &fwc->fw_names); } else { free_fw_cache_entry(fce); @@ -1287,8 +1280,9 @@ static void dev_cache_fw_image(struct device *dev, void *data) spin_unlock(&fwc->name_lock); if (fce) - async_schedule(__async_dev_cache_fw_image, - (void *)fce); + async_schedule_domain(__async_dev_cache_fw_image, + (void *)fce, + &fw_cache_domain); } } @@ -1350,21 +1344,7 @@ static void device_cache_fw_images(void) mutex_unlock(&fw_lock); /* wait for completion of caching firmware for all devices */ - spin_lock(&fwc->name_lock); - for (;;) { - prepare_to_wait(&fwc->wait_queue, &wait, - TASK_UNINTERRUPTIBLE); - if (!fwc->cnt) - break; - - spin_unlock(&fwc->name_lock); - - schedule(); - - spin_lock(&fwc->name_lock); - } - spin_unlock(&fwc->name_lock); - finish_wait(&fwc->wait_queue, &wait); + async_synchronize_full_domain(&fw_cache_domain); loading_timeout = old_timeout; } @@ -1452,9 +1432,7 @@ static void __init fw_cache_init(void) #ifdef CONFIG_PM_SLEEP spin_lock_init(&fw_cache.name_lock); INIT_LIST_HEAD(&fw_cache.fw_names); - fw_cache.cnt = 0; - init_waitqueue_head(&fw_cache.wait_queue); INIT_DELAYED_WORK(&fw_cache.work, device_uncache_fw_images_work); -- cgit v1.2.3 From debe081aaa4d247b9957ac2336d84deab32d9909 Mon Sep 17 00:00:00 2001 From: "jhbird.choi@samsung.com" Date: Tue, 23 Oct 2012 00:54:38 +0200 Subject: PM / Domains: Fix memory leak on error path in pm_genpd_attach_cpuidle If pm_genpd_attach_cpudidle failed we leak memory stored in 'cpu_data'. Signed-off-by: Jonghwan Choi Signed-off-by: Rafael J. Wysocki --- drivers/base/power/domain.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index c22b869245d9..96b71b6536d6 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1862,7 +1862,7 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state) cpuidle_drv = cpuidle_driver_ref(); if (!cpuidle_drv) { ret = -ENODEV; - goto out; + goto err_drv; } if (cpuidle_drv->state_count <= state) { ret = -EINVAL; @@ -1884,6 +1884,9 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state) err: cpuidle_driver_unref(); + + err_drv: + kfree(cpu_data); goto out; } -- cgit v1.2.3 From 446c82fc44da5ae24a205d7130571614dc6969d3 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 18 Oct 2012 09:29:44 +0200 Subject: drivers: dma-contiguous: Don't redefine SZ_1M Use the definition from linux/sizes.h instead. Signed-off-by: Laurent Pinchart Signed-off-by: Marek Szyprowski --- drivers/base/dma-contiguous.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c index 9a1469474f55..612afcc5a938 100644 --- a/drivers/base/dma-contiguous.c +++ b/drivers/base/dma-contiguous.c @@ -27,15 +27,12 @@ #include #include #include +#include #include #include #include #include -#ifndef SZ_1M -#define SZ_1M (1 << 20) -#endif - struct cma { unsigned long base_pfn; unsigned long count; -- cgit v1.2.3 From ba4d93bc9ea4510a145161f0af3537b4f380af01 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 18 Oct 2012 09:29:44 +0200 Subject: drivers: dma-coherent: Fix typo in dma_mmap_from_coherent documentation The function documentation incorrectly references dma_release_coherent. Fix it. Don't mention a specific function name as dma_mmap_from_coherent as multiple callers. Signed-off-by: Laurent Pinchart Signed-off-by: Marek Szyprowski --- drivers/base/dma-coherent.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c index 560a7173f810..bc256b641027 100644 --- a/drivers/base/dma-coherent.c +++ b/drivers/base/dma-coherent.c @@ -191,9 +191,8 @@ EXPORT_SYMBOL(dma_release_from_coherent); * This checks whether the memory was allocated from the per-device * coherent memory pool and if so, maps that memory to the provided vma. * - * Returns 1 if we correctly mapped the memory, or 0 if - * dma_release_coherent() should proceed with mapping memory from - * generic pools. + * Returns 1 if we correctly mapped the memory, or 0 if the caller should + * proceed with mapping memory from generic pools. */ int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma, void *vaddr, size_t size, int *ret) -- cgit v1.2.3 From 5e97f3f918c27c68c092bdca7917266615aec62f Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 18 Oct 2012 09:29:44 +0200 Subject: drivers: cma: Fix wrong CMA selected region size default value Kconfig lists CMA_SIZE_SEL_ABSOLUTE as the default value fo the CMA selected region size, but that option isn't available in the defined choices. Set the default to CMA_SIZE_SEL_MBYTES instead. Signed-off-by: Laurent Pinchart Signed-off-by: Marek Szyprowski --- drivers/base/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 08b4c5209384..b34b5cda5ae1 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -236,7 +236,7 @@ config CMA_SIZE_PERCENTAGE choice prompt "Selected region size" - default CMA_SIZE_SEL_ABSOLUTE + default CMA_SIZE_SEL_MBYTES config CMA_SIZE_SEL_MBYTES bool "Use mega bytes value only" -- cgit v1.2.3 From 5cf8f7db8274f68b180ad277dbb0308e72b66efd Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Mon, 29 Oct 2012 23:26:56 +0000 Subject: sparc: Add sparc support for platform_get_irq() This adds sparc support for platform_get_irq that in the normal case use platform_get_resource() to get an irq. This standard approach fails for sparc as there are no resources of type IORESOURCE_IRQ for irqs for sparc. Cross platform drivers can then use this standard platform function and work on sparc instead of having to have a special case for sparc. Signed-off-by: Andreas Larsson Signed-off-by: David S. Miller --- drivers/base/platform.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/base') diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 8727e9c5eea4..72c776f2a1f5 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -83,9 +83,16 @@ EXPORT_SYMBOL_GPL(platform_get_resource); */ int platform_get_irq(struct platform_device *dev, unsigned int num) { +#ifdef CONFIG_SPARC + /* sparc does not have irqs represented as IORESOURCE_IRQ resources */ + if (!dev || num >= dev->archdata.num_irqs) + return -ENXIO; + return dev->archdata.irqs[num]; +#else struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num); return r ? r->start : -ENXIO; +#endif } EXPORT_SYMBOL_GPL(platform_get_irq); -- cgit v1.2.3 From a7227a0faa117d0bc532aea546ae5ac5f89e8ed7 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 23 Nov 2012 20:55:06 +0100 Subject: PM / QoS: fix wrong error-checking condition dev_pm_qos_add_request() can return 0, 1, or a negative error code, therefore the correct error test is "if (error < 0)." Checking just for non-zero return code leads to erroneous setting of the req->dev pointer to NULL, which then leads to a repeated call to dev_pm_qos_add_ancestor_request() in st1232_ts_irq_handler(). This in turn leads to an Oops, when the I2C host adapter is unloaded and reloaded again because of the inconsistent state of its QoS request list. Signed-off-by: Guennadi Liakhovetski Cc: Signed-off-by: Rafael J. Wysocki --- drivers/base/power/qos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 74a67e0019a2..fbbd4ed2edf2 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -451,7 +451,7 @@ int dev_pm_qos_add_ancestor_request(struct device *dev, if (ancestor) error = dev_pm_qos_add_request(ancestor, req, value); - if (error) + if (error < 0) req->dev = NULL; return error; -- cgit v1.2.3