Commit b042245b authored by Kangjie Lu's avatar Kangjie Lu Committed by Greg Kroah-Hartman

ALSA: sb8: add a check for request_region

[ Upstream commit dcd0feac ]

In case request_region fails, the fix returns an error code to
avoid NULL pointer dereference.
Signed-off-by: default avatarKangjie Lu <kjlu@umn.edu>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 7d831a05
......@@ -111,6 +111,10 @@ static int snd_sb8_probe(struct device *pdev, unsigned int dev)
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
if (!acard->fm_res) {
err = -EBUSY;
goto _err;
}
if (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
......
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