diff mbox series

ASoC: rt711-sdca: fix kernel NULL pointer dereference when IO error

Message ID 20220621090719.30558-1-shumingf@realtek.com
State Accepted
Commit 1df793d479bef546569fc2e409ff8bb3f0fb8e99
Headers show
Series ASoC: rt711-sdca: fix kernel NULL pointer dereference when IO error | expand

Commit Message

Shuming [θŒƒζ›ΈιŠ˜] June 21, 2022, 9:07 a.m. UTC 
From: Shuming Fan <shumingf@realtek.com>

The initial settings will be written before the codec probe function.
But, the rt711->component doesn't be assigned yet.
If IO error happened during initial settings operations, it will cause the kernel panic.
This patch changed component->dev to slave->dev to fix this issue.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
---
 sound/soc/codecs/rt711-sdca.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/codecs/rt711-sdca.c b/sound/soc/codecs/rt711-sdca.c
index 9d226b1cb7e9..925268121901 100644
--- a/sound/soc/codecs/rt711-sdca.c
+++ b/sound/soc/codecs/rt711-sdca.c
@@ -34,7 +34,7 @@  static int rt711_sdca_index_write(struct rt711_sdca_priv *rt711,
 
 	ret = regmap_write(regmap, addr, value);
 	if (ret < 0)
-		dev_err(rt711->component->dev,
+		dev_err(&rt711->slave->dev,
 			"Failed to set private value: %06x <= %04x ret=%d\n",
 			addr, value, ret);
 
@@ -50,7 +50,7 @@  static int rt711_sdca_index_read(struct rt711_sdca_priv *rt711,
 
 	ret = regmap_read(regmap, addr, value);
 	if (ret < 0)
-		dev_err(rt711->component->dev,
+		dev_err(&rt711->slave->dev,
 			"Failed to get private value: %06x => %04x ret=%d\n",
 			addr, *value, ret);