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@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>

diff --git a/drivers/pwm/pwm-atmel-hlcdc.c b/drivers/pwm/pwm-atmel-hlcdc.c
index 3f2c5031a3ba85fd756f02a17b63739fd4575256..1f6fc9a9fcf3ece292a530005388965e749afe9f 100644 (file)
--- a/drivers/pwm/pwm-atmel-hlcdc.c
+++ b/drivers/pwm/pwm-atmel-hlcdc.c
@@ -185,7 +185,7 @@ 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;