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driver core: Add dev_set_drv_sync_state()

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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@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X
Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250701114733.636510-20-ulf.hansson@linaro.org
This commit is contained in:
Saravana Kannan 2025-07-01 13:47:21 +02:00 committed by Ulf Hansson
parent 3b7b8acacf
commit 2b5630e988
1 changed files with 12 additions and 0 deletions
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12
include/linux/device.h
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@ -917,6 +917,18 @@ 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)
{