[PATCH 6.7 200/713] pwm: atmel-hlcdc: Fix clock imbalance related to suspend support

Sasha Levin
2024-03-24T22:50:39Z

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

[ 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@tuxon.dev>
Link: https://lore.kernel.org/r/b51ea92b0a45eff3dc83b08adefd43d930df996c.1706269232.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pwm/pwm-atmel-hlcdc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-atmel-hlcdc.c b/drivers/pwm/pwm-atmel-hlcdc.c
index 07920e0347575..584288d8c0503 100644
--- a/drivers/pwm/pwm-atmel-hlcdc.c
+++ b/drivers/pwm/pwm-atmel-hlcdc.c
@@ -186,7 +186,7 @@ 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;
--
2.43.0