V4L/DVB (13321): radio-gemtek-pci: fix double mutex_lock

commit 3addbb8075c00e2a2408c192bd1002dead26b2aa upstream.

Double mutexlock found by the Linux Driver Verification project and
reported by Alexander Strakh.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index c3f579de6e7171b1c7dce048b82ce526b0ba9c59..c6cf1166186824b1c062350617c14c7edef0ed01 100644 (file)
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -181,12 +181,10 @@ static void gemtek_pci_mute(struct gemtek_pci *card)
 
 static void gemtek_pci_unmute(struct gemtek_pci *card)
 {
-       mutex_lock(&card->lock);
        if (card->mute) {
                gemtek_pci_setfrequency(card, card->current_frequency);
                card->mute = false;
        }
-       mutex_unlock(&card->lock);
 }
 
 static int gemtek_pci_getsignal(struct gemtek_pci *card)