From: Saravana Kannan <saravanak@xxxxxxxxxx>
This can be used by frameworks to set the sync_state() helper functions
for drivers that don't already have them set.
Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/device.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/device.h b/include/linux/device.h
index 66c13965153d..bae11928ef7e 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -995,6 +995,18 @@ static inline bool dev_has_sync_state(struct device *dev)
return false;
}
+static inline int dev_set_drv_sync_state(struct device *dev,
+ void (*fn)(struct device *dev))
+{
+ if (!dev || !dev->driver)
+ return 0;
+ if (dev->driver->sync_state && dev->driver->sync_state != fn)
+ return -EBUSY;
+ if (!dev->driver->sync_state)
+ dev->driver->sync_state = fn;
+ return 0;
+}
+
static inline void dev_set_removable(struct device *dev,
enum device_removable removable)
{
--
2.34.1
