From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 42885551cedb45961879d2fc3dc3c4dc545cc23e ]
For each pwm output which gets enabled through pwm_lpss_apply(), we do a pm_runtime_get_sync().
This commit adds pm_runtime_put() calls to pwm_lpss_remove() to balance these when the driver gets removed with some of the outputs still enabled.
Fixes: f080be27d7d9 ("pwm: lpss: Add support for runtime PM") Acked-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Thierry Reding thierry.reding@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/pwm/pwm-lpss.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c index 1e69c1c..7a4a640 100644 --- a/drivers/pwm/pwm-lpss.c +++ b/drivers/pwm/pwm-lpss.c @@ -216,6 +216,12 @@ struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
int pwm_lpss_remove(struct pwm_lpss_chip *lpwm) { + int i; + + for (i = 0; i < lpwm->info->npwm; i++) { + if (pwm_is_enabled(&lpwm->chip.pwms[i])) + pm_runtime_put(lpwm->chip.dev); + } return pwmchip_remove(&lpwm->chip); } EXPORT_SYMBOL_GPL(pwm_lpss_remove);