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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2020-05-12 12:07:05 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-12 17:14:34 +0100 |
| commit | 4e8748fcaeec073e3ba794871ce86c545e4f961f (patch) | |
| tree | 330364cece3276ae5adbe1ed7f6c865e2ad9c143 /sound/soc/ux500 | |
| parent | 936b9df7a5c00db92088b3c51316d5f551ee5b2c (diff) | |
| download | linux-rpi-4e8748fcaeec073e3ba794871ce86c545e4f961f.tar.gz linux-rpi-4e8748fcaeec073e3ba794871ce86c545e4f961f.tar.bz2 linux-rpi-4e8748fcaeec073e3ba794871ce86c545e4f961f.zip | |
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>
Diffstat (limited to 'sound/soc/ux500')
| -rw-r--r-- | sound/soc/ux500/mop500.c | 11 |
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; } |