diff options
Diffstat (limited to 'drivers/gpio/gpiolib.h')
| -rw-r--r-- | drivers/gpio/gpiolib.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index a738e6c647d8..58f64056de77 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -16,6 +16,7 @@ #include <linux/gpio/driver.h> #include <linux/module.h> #include <linux/notifier.h> +#include <linux/spinlock.h> #include <linux/srcu.h> #include <linux/workqueue.h> @@ -47,6 +48,7 @@ * @list: links gpio_device:s together for traversal * @line_state_notifier: used to notify subscribers about lines being * requested, released or reconfigured + * @line_state_lock: RW-spinlock protecting the line state notifier * @line_state_wq: used to emit line state events from a separate thread in * process context * @device_notifier: used to notify character device wait queues about the GPIO @@ -75,7 +77,8 @@ struct gpio_device { const char *label; void *data; struct list_head list; - struct atomic_notifier_head line_state_notifier; + struct raw_notifier_head line_state_notifier; + rwlock_t line_state_lock; struct workqueue_struct *line_state_wq; struct blocking_notifier_head device_notifier; struct srcu_struct srcu; |