index : openwrt/upstream	attitude_adjustment barrier_breaker chaos_calmer lede-17.01 less-old-master master old-master openwrt-18.06 openwrt-19.07 upstream
	upstream openwrt	James

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path: root/target/linux/ar71xx/files/drivers/mtd/cybertan_part.c

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Period:	week month quarter
Authors:	102550100all

Commits per author per week (path 'target/linux/ar71xx/files/drivers/mtd/cybertan_part.c')

Author	W37 2025	W38 2025	W39 2025	W40 2025	Total
Total	0	0	0	0	0

generated by cgit v1.2.3 (git 2.25.1) at 2025-10-01 22:07:05 +0000

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
@@ -143,6 +143,8 @@ 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
@@ -233,6 +235,8 @@ 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)
@@ -293,6 +297,8 @@ static ssize_t gpiommc_config_attr_show(
 	WARN_ON(1);
 	err = -ENOSYS;
 out:
+	mutex_unlock(&dev->mutex);
+
 	return err ? err : count;
 }
 
@@ -352,6 +358,8 @@ 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)
@@ -477,6 +485,8 @@ static ssize_t gpiommc_config_attr_store
 	WARN_ON(1);
 	err = -ENOSYS;
 out:
+	mutex_unlock(&dev->mutex);
+
 	return err ? err : count;
 }
 
@@ -513,6 +523,7 @@ 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);