| Message ID | 1502456783-2047-1-git-send-email-vasilyev@ispras.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index af3ba4d..6f896e3 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -1376,13 +1376,9 @@ static int samsung_i2s_probe(struct platform_device *pdev) static int samsung_i2s_remove(struct platform_device *pdev) { - struct i2s_dai *pri_dai, *sec_dai; + struct i2s_dai *pri_dai; pri_dai = dev_get_drvdata(&pdev->dev); - sec_dai = pri_dai->sec_dai; - - pri_dai->sec_dai = NULL; - sec_dai->pri_dai = NULL; pm_runtime_get_sync(&pdev->dev); pm_runtime_disable(&pdev->dev);
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() performs 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 <vasilyev@ispras.ru> --- v2: Drop initialization of sec_dai by NULL at samsung_i2s_remove as Sylwester Nawrocki suggest. --- v3: Fix typo in the comment --- sound/soc/samsung/i2s.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)