diff mbox series

[4.14,019/343] pwm: lpss: Release runtime-pm reference from the drivers remove callback

Message ID 20200124092922.155017203@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Jan. 24, 2020, 9:27 a.m. UTC 
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>
---
 drivers/pwm/pwm-lpss.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 1e69c1c9ec096..7a4a6406cf69a 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -216,6 +216,12 @@  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);