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@xxxxxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v2:
-New patch in v2 of this patch-set replacing "pwm: lpss: Add
pwm_lpss_get_put_runtime_pm helper function"
---
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 e602835fd6de..723ca9de8325 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -205,6 +205,12 @@ EXPORT_SYMBOL_GPL(pwm_lpss_probe);
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);
--
2.19.0
