This is a note to let you know that I've just added the patch titled
ASoC: simple-card: fixup asoc_simple_probe() error handling
to the 5.10-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-simple-card-fixup-asoc_simple_probe-error-handling.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 41bae58df411f9accf01ea660730649b2fab1dab Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Date: Tue, 19 Sep 2023 05:34:18 +0000
Subject: ASoC: simple-card: fixup asoc_simple_probe() error handling
From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
commit 41bae58df411f9accf01ea660730649b2fab1dab upstream.
asoc_simple_probe() is used for both "DT probe" (A) and "platform probe"
(B). It uses "goto err" when error case, but it is not needed for
"platform probe" case (B). Thus it is using "return" directly there.
static int asoc_simple_probe(...)
{
^ if (...) {
| ...
(A) if (ret < 0)
| goto err;
v } else {
^ ...
| if (ret < 0)
(B) return -Exxx;
v }
...
^ if (ret < 0)
(C) goto err;
v ...
err:
(D) simple_util_clean_reference(card);
return ret;
}
Both case are using (C) part, and it calls (D) when err case.
But (D) will do nothing for (B) case.
Because of these behavior, current code itself is not wrong,
but is confusable, and more, static analyzing tool will warning on
(B) part (should use goto err).
To avoid static analyzing tool warning, this patch uses "goto err"
on (B) part.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/87o7hy7mlh.wl-kuninori.morimoto.gx@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/generic/simple-card.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -634,10 +634,12 @@ static int asoc_simple_probe(struct plat
int dai_idx = 0;
+ ret = -EINVAL;
+
cinfo = dev->platform_data;
if (!cinfo) {
dev_err(dev, "no info for asoc-simple-card\n");
- return -EINVAL;
+ goto err;
}
if (!cinfo->name ||
@@ -646,7 +648,7 @@ static int asoc_simple_probe(struct plat
!cinfo->platform ||
!cinfo->cpu_dai.name) {
dev_err(dev, "insufficient asoc_simple_card_info settings\n");
- return -EINVAL;
+ goto err;
}
dai_props->cpu_dai = &priv->dais[dai_idx++];
Patches currently in stable-queue which might be from kuninori.morimoto.gx@xxxxxxxxxxx are
queue-5.10/asoc-simple-card-fixup-asoc_simple_probe-error-handling.patch
