From d56ba9a04d7548d4149c46ec86a0e3cc41a70f4a Mon Sep 17 00:00:00 2001
From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Tue, 13 Sep 2022 17:00:01 +0800
Subject: [PATCH] ASoC: imx-card: Fix refcount issue with of_node_put
Git-commit: d56ba9a04d7548d4149c46ec86a0e3cc41a70f4a
Patch-mainline: v6.0
References: git-fixes
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@nxp.com>
Link: https://lore.kernel.org/r/1663059601-29259-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/fsl/imx-card.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index 14be29530fb5..3f128ced4180 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;
--
2.35.3