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staging: wfx: fix warning about freeing in-use mutex during device unregister

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After hif_shutdown(), communication with the chip is no more possible.
It the only request that never reply. Therefore, hif_cmd.lock is never
unlocked. hif_shutdown() unlock itself hif_cmd.lock to avoid a potential
warning during disposal of device. hif_cmd.key_renew_lock should also
been unlocked for the same reason.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200310101356.182818-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jérôme Pouiller 2020-03-10 11:13:52 +01:00 committed by Greg Kroah-Hartman
parent 9d32c0cde4
commit bab0a0b034
1 changed files with 1 additions and 0 deletions
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1
drivers/staging/wfx/hif_tx.c
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@ -140,6 +140,7 @@ int hif_shutdown(struct wfx_dev *wdev)
else
control_reg_write(wdev, 0);
mutex_unlock(&wdev->hif_cmd.lock);
mutex_unlock(&wdev->hif_cmd.key_renew_lock);
kfree(hif);
return ret;
}