This is a note to let you know that I've just added the patch titled
pwm: atmel-hlcdc: Fix clock imbalance related to suspend support
to the 6.6-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:
pwm-atmel-hlcdc-fix-clock-imbalance-related-to-suspe.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3de741c00ea7f0644f3eb47b3c261819629b888d
Author: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Fri Jan 26 13:04:33 2024 +0100
pwm: atmel-hlcdc: Fix clock imbalance related to suspend support
[ Upstream commit e25ac87d3f831fed002c34aadddaf4ebb4ea45ec ]
The suspend callback disables the periph clock when the PWM is enabled
and resume reenables this clock if the PWM was disabled before. Judging
from the code comment it's suspend that is wrong here. Fix accordingly.
Fixes: f9bb9da7c09d ("pwm: atmel-hlcdc: Implement the suspend/resume hooks")
Reviewed-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxx>
Link: https://lore.kernel.org/r/b51ea92b0a45eff3dc83b08adefd43d930df996c.1706269232.git.u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pwm/pwm-atmel-hlcdc.c b/drivers/pwm/pwm-atmel-hlcdc.c
index e271d920151e4..5f6612e1dd34d 100644
--- a/drivers/pwm/pwm-atmel-hlcdc.c
+++ b/drivers/pwm/pwm-atmel-hlcdc.c
@@ -187,7 +187,7 @@ static int atmel_hlcdc_pwm_suspend(struct device *dev)
struct atmel_hlcdc_pwm *atmel = dev_get_drvdata(dev);
/* Keep the periph clock enabled if the PWM is still running. */
- if (pwm_is_enabled(&atmel->chip.pwms[0]))
+ if (!pwm_is_enabled(&atmel->chip.pwms[0]))
clk_disable_unprepare(atmel->hlcdc->periph_clk);
return 0;
