If (quirks & QUIRK_SEC_DAI == 0) then samsung_i2s_probe() doesn't allocate
sec_dai and pri_dai->sec_dai remains Null, but samsung_i2s_remove()
permorms pri_dai->sec_dai dereference in any case.
The patch adds sec_dai check on Null before derefence at
samsung_i2s_remove().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasil...@ispras.ru>
---
sound/soc/samsung/i2s.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index af3ba4d..6beeea8 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1382,7 +1382,8 @@ static int samsung_i2s_remove(struct platform_device
*pdev)
sec_dai = pri_dai->sec_dai;
pri_dai->sec_dai = NULL;
- sec_dai->pri_dai = NULL;
+ if (sec_dai)
+ sec_dai->pri_dai = NULL;
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
--
2.7.4
