5.10-stable review patch. If anyone has any objections, please let me know.
------------------
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++];
