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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2020-05-12 13:07:05 +0300
committerMark Brown <broonie@kernel.org>2020-05-12 19:14:34 +0300
commit4e8748fcaeec073e3ba794871ce86c545e4f961f (patch)
tree330364cece3276ae5adbe1ed7f6c865e2ad9c143
parent936b9df7a5c00db92088b3c51316d5f551ee5b2c (diff)
downloadlinux-4e8748fcaeec073e3ba794871ce86c545e4f961f.tar.xz
ASoC: ux500: mop500: Fix some refcounted resources issues
There are 2 issues here: - if one of the 'of_parse_phandle' fails, calling 'mop500_of_node_put()' is a no-op because the 'mop500_dai_links' structure has not been initialized yet, so the referenced are not decremented - The reference stored in 'mop500_dai_links[i].codecs' is refcounted only once in the probe and must be decremented only once. Fixes: 39013bd60e79 ("ASoC: Ux500: Dispose of device nodes correctly") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/20200512100705.246349-1-christophe.jaillet@wanadoo.fr Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/ux500/mop500.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/sound/soc/ux500/mop500.c b/sound/soc/ux500/mop500.c
index 2873e8e6f02b..cdae1190b930 100644
--- a/sound/soc/ux500/mop500.c
+++ b/sound/soc/ux500/mop500.c
@@ -63,10 +63,11 @@ static void mop500_of_node_put(void)
{
int i;
- for (i = 0; i < 2; i++) {
+ for (i = 0; i < 2; i++)
of_node_put(mop500_dai_links[i].cpus->of_node);
- of_node_put(mop500_dai_links[i].codecs->of_node);
- }
+
+ /* Both links use the same codec, which is refcounted only once */
+ of_node_put(mop500_dai_links[0].codecs->of_node);
}
static int mop500_of_probe(struct platform_device *pdev,
@@ -81,7 +82,9 @@ static int mop500_of_probe(struct platform_device *pdev,
if (!(msp_np[0] && msp_np[1] && codec_np)) {
dev_err(&pdev->dev, "Phandle missing or invalid\n");
- mop500_of_node_put();
+ for (i = 0; i < 2; i++)
+ of_node_put(msp_np[i]);
+ of_node_put(codec_np);
return -EINVAL;
}