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pwm: Fix order of freeing resources in pwmchip_remove() 

pwmchip_add() calls of_pwmchip_add() only after adding the chip to
pwm_chips and releasing pwm_lock. So the proper order in
pwmchip_remove() is to call of_pwmchip_remove() before taking the mutex
and removing the chip from pwm_chips. This way pwmchip_remove() releases
the resources in reverse order compared to pwmchip_add() requesting
them.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Uwe Kleine-König 2023-07-25 10:10:04 +02:00 committed by Thierry Reding
parent 387c74e5f9
commit 86eed2a103
1 changed files with 3 additions and 3 deletions
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6
drivers/pwm/core.c
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@ -318,13 +318,13 @@ void pwmchip_remove(struct pwm_chip *chip)
{
pwmchip_sysfs_unexport(chip);
if (IS_ENABLED(CONFIG_OF))
of_pwmchip_remove(chip);
mutex_lock(&pwm_lock);
list_del_init(&chip->list);
if (IS_ENABLED(CONFIG_OF))
of_pwmchip_remove(chip);
free_pwms(chip);
mutex_unlock(&pwm_lock);