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ASoC: imx-card: Fix refcount issue with of_node_put

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[ Upstream commit d56ba9a04d ]

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: aa736700f4 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shengjiu Wang
2022-09-13 17:00:01 +08:00
committed by Greg Kroah-Hartman
parent 367403bc1c
commit 5664dc84fc
1 changed files with 4 additions and 0 deletions
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4
sound/soc/fsl/imx-card.c
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@@ -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;