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PM / devfreq: Unlock mutex and free devfreq struct in error path

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commit 8b50a79957 upstream.

The devfreq->lock is held for time of setup. Release the lock in the
error path, before jumping to the end of the function.

Change the goto destination which frees the allocated memory.

Cc: v5.9+ <stable@vger.kernel.org> # v5.9+
Fixes: 4dc3bab868 ("PM / devfreq: Add support delayed timer for polling mode")
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lukasz Luba 2021-03-15 09:31:23 +00:00 • committed by Greg Kroah-Hartman
commit 2f2d444ac4
1 changed files with 2 additions and 1 deletions
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3
drivers/devfreq/devfreq.c
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@ -788,7 +788,8 @@ struct devfreq *devfreq_add_device(struct device *dev,
if (devfreq->profile->timer < 0
|| devfreq->profile->timer >= DEVFREQ_TIMER_NUM) {
goto err_out;
mutex_unlock(&devfreq->lock);
goto err_dev;
}
if (!devfreq->profile->max_state && !devfreq->profile->freq_table) {