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pwm: lpss: Release runtime-pm reference from the driver's remove callback

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[ 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: f080be27d7 ("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>
This commit is contained in:
Hans de Goede 2018-10-12 12:12:28 +02:00 • committed by Greg Kroah-Hartman
commit 0b63a86ea9
1 changed files with 6 additions and 0 deletions
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6
drivers/pwm/pwm-lpss.c
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@ -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);