This is a note to let you know that I've just added the patch titled
power: supply: core: Remove might_sleep() from power_supply_put()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
power-supply-core-remove-might_sleep-from-power_supp.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f8d5811f7457995479480be6a75ff6a03e387d54
Author: Bart Van Assche <bvanassche@xxxxxxx>
Date: Tue Sep 17 12:39:14 2024 -0700
power: supply: core: Remove might_sleep() from power_supply_put()
[ Upstream commit f6da4553ff24a5d1c959c9627c965323adc3d307 ]
The put_device() call in power_supply_put() may call
power_supply_dev_release(). The latter function does not sleep so
power_supply_put() doesn't sleep either. Hence, remove the might_sleep()
call from power_supply_put(). This patch suppresses false positive
complaints about calling a sleeping function from atomic context if
power_supply_put() is called from atomic context.
Cc: Kyle Tso <kyletso@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Fixes: 1a352462b537 ("power_supply: Add power_supply_put for decrementing device reference counter")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240917193914.47566-1-bvanassche@xxxxxxx
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index 8b2cd63016160..2ebf838fbf9d3 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -479,8 +479,6 @@ EXPORT_SYMBOL_GPL(power_supply_get_by_name);
*/
void power_supply_put(struct power_supply *psy)
{
- might_sleep();
-
atomic_dec(&psy->use_cnt);
put_device(&psy->dev);
}
