This is a note to let you know that I've just added the patch titled
ASoC: imx-card: Fix refcount issue with of_node_put
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-imx-card-fix-refcount-issue-with-of_node_put.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 321621e5e48335e3c55cdb4aaf12eafbca7191b6
Author: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Date: Tue Sep 13 17:00:01 2022 +0800
ASoC: imx-card: Fix refcount issue with of_node_put
[ Upstream commit d56ba9a04d7548d4149c46ec86a0e3cc41a70f4a ]
imx_card_parse_of will search all the node with loop,
if there is defer probe happen in the middle of loop,
the previous released codec node will be released
twice, then cause refcount issue.
Here assign NULL to pointer of released nodes to fix
the issue.
Fixes: aa736700f42f ("ASoC: imx-card: Add imx-card machine driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Link: https://lore.kernel.org/r/1663059601-29259-1-git-send-email-shengjiu.wang@xxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index 593d69b96523..d59f5efbf7ed 100644
--- a/sound/soc/fsl/imx-card.c
+++ b/sound/soc/fsl/imx-card.c
@@ -698,6 +698,10 @@ static int imx_card_parse_of(struct imx_card_data *data)
of_node_put(cpu);
of_node_put(codec);
of_node_put(platform);
+
+ cpu = NULL;
+ codec = NULL;
+ platform = NULL;
}
return 0;
