diff options
| author | Roman Yeryomin <roman@advem.lv> | 2013-05-26 01:02:55 +0300 |
|---|---|---|
| committer | Roman Yeryomin <roman@advem.lv> | 2013-05-26 01:02:55 +0300 |
| commit | 342045a35b1981a89e4bc80842b10c065e1050da (patch) | |
| tree | 4140720b20e8d641c11da882010d6130a75fef21 /target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch | |
| parent | 7338133dde8238afce34676214b494c8db96689b (diff) | |
| parent | 1a116ce7818ecee5d167a9c0ebb1a0feca9120e6 (diff) | |
Merge trunk into realtek-unstable
Conflicts:
Config.in
feeds.conf.default
package/base-files/files/etc/hotplug2-common.rules
package/network/config/netifd/files/etc/init.d/network
Diffstat (limited to 'target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch')
| -rw-r--r-- | target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch b/target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch new file mode 100644 index 000000000..d4201eb50 --- /dev/null +++ b/target/linux/generic/patches-3.9/864-gpiommc_configfs_locking.patch @@ -0,0 +1,58 @@ +The gpiommc configfs context structure needs locking, as configfs +does not lock access between files. + +--- a/drivers/mmc/host/gpiommc.c ++++ b/drivers/mmc/host/gpiommc.c +@@ -144,6 +144,8 @@ struct gpiommc_configfs_device { + struct platform_device *pdev; + /* The configuration */ + struct gpiommc_platform_data pdata; ++ /* Mutex to protect this structure */ ++ struct mutex mutex; + }; + + #define GPIO_INVALID -1 +@@ -234,6 +236,8 @@ static ssize_t gpiommc_config_attr_show( + unsigned int gpio; + int err = 0; + ++ mutex_lock(&dev->mutex); ++ + if (attr == &gpiommc_attr_DI) { + gpio = dev->pdata.pins.gpio_di; + if (gpio == GPIO_INVALID) +@@ -294,6 +298,8 @@ static ssize_t gpiommc_config_attr_show( + WARN_ON(1); + err = -ENOSYS; + out: ++ mutex_unlock(&dev->mutex); ++ + return err ? err : count; + } + +@@ -353,6 +359,8 @@ static ssize_t gpiommc_config_attr_store + int err = -EINVAL; + unsigned long data; + ++ mutex_lock(&dev->mutex); ++ + if (attr == &gpiommc_attr_register) { + err = strict_strtoul(page, 10, &data); + if (err) +@@ -478,6 +486,8 @@ static ssize_t gpiommc_config_attr_store + WARN_ON(1); + err = -ENOSYS; + out: ++ mutex_unlock(&dev->mutex); ++ + return err ? err : count; + } + +@@ -514,6 +524,7 @@ static struct config_item *gpiommc_make_ + if (!dev) + return NULL; + ++ mutex_init(&dev->mutex); + config_item_init_type_name(&dev->item, name, + &gpiommc_dev_ci_type); + |
