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Subject[PATCH 4.19 050/639] pwm: lpss: Release runtime-pm reference from the drivers remove callback
Date
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 --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);
--
2.20.1


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