pwm: lpss: Remove ->free() callback

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The LPSS PWM driver calls pwm_lpss_disable() when the PWM device is
released (for example unexported from sysfs). This in turn calls
pm_runtime_put() which makes runtime PM count to be unbalanced if the
device has not been enabled at this point.

This is easy to reproduce:

  # cd /sys/class/pwm/pwmchip0
  # echo 0 > export
  # echo 0 > unexport

The count is unbalanced and prevents the PWM device from being powered on
next time.

Fix this by removing ->free() callback. There are no resources to be
released anyway.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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Mika Westerberg 2015-12-09 16:05:59 +02:00 • committed by Thierry Reding

parent 8005c49d9a

commit c7b91b33cf

1 changed files with 0 additions and 1 deletions

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drivers/pwm/pwm-lpss.c

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