All of lore.kernel.org
 help / color / mirror / Atom feed
From: Chuhong Yuan <hslester96@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Paul Cercueil <paul@crapouillou.net>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>,
	Lars-Peter Clausen <lars@metafoo.de>,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	Chuhong Yuan <hslester96@gmail.com>
Subject: [PATCH] ASoC: jz4740-i2s: add missed checks for clk_get()
Date: Thu,  3 Dec 2020 22:42:27 +0800	[thread overview]
Message-ID: <20201203144227.418194-1-hslester96@gmail.com> (raw)

jz4740_i2s_set_sysclk() does not check the return values of clk_get(),
while the file dereferences the pointers in clk_put().
Add the missed checks to fix it.

Fixes: 11bd3dd1b7c2 ("ASoC: Add JZ4740 ASoC support")
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
---
 sound/soc/jz4740/jz4740-i2s.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
index c7bd20104b20..0793e284d0e7 100644
--- a/sound/soc/jz4740/jz4740-i2s.c
+++ b/sound/soc/jz4740/jz4740-i2s.c
@@ -312,10 +312,14 @@ static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	switch (clk_id) {
 	case JZ4740_I2S_CLKSRC_EXT:
 		parent = clk_get(NULL, "ext");
+		if (IS_ERR(parent))
+			return PTR_ERR(parent);
 		clk_set_parent(i2s->clk_i2s, parent);
 		break;
 	case JZ4740_I2S_CLKSRC_PLL:
 		parent = clk_get(NULL, "pll half");
+		if (IS_ERR(parent))
+			return PTR_ERR(parent);
 		clk_set_parent(i2s->clk_i2s, parent);
 		ret = clk_set_rate(i2s->clk_i2s, freq);
 		break;
-- 
2.26.2


WARNING: multiple messages have this Message-ID (diff)
From: Chuhong Yuan <hslester96@gmail.com>
Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen <lars@metafoo.de>,
	linux-kernel@vger.kernel.org, Chuhong Yuan <hslester96@gmail.com>,
	Takashi Iwai <tiwai@suse.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Paul Cercueil <paul@crapouillou.net>,
	Mark Brown <broonie@kernel.org>
Subject: [PATCH] ASoC: jz4740-i2s: add missed checks for clk_get()
Date: Thu,  3 Dec 2020 22:42:27 +0800	[thread overview]
Message-ID: <20201203144227.418194-1-hslester96@gmail.com> (raw)

jz4740_i2s_set_sysclk() does not check the return values of clk_get(),
while the file dereferences the pointers in clk_put().
Add the missed checks to fix it.

Fixes: 11bd3dd1b7c2 ("ASoC: Add JZ4740 ASoC support")
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
---
 sound/soc/jz4740/jz4740-i2s.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
index c7bd20104b20..0793e284d0e7 100644
--- a/sound/soc/jz4740/jz4740-i2s.c
+++ b/sound/soc/jz4740/jz4740-i2s.c
@@ -312,10 +312,14 @@ static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	switch (clk_id) {
 	case JZ4740_I2S_CLKSRC_EXT:
 		parent = clk_get(NULL, "ext");
+		if (IS_ERR(parent))
+			return PTR_ERR(parent);
 		clk_set_parent(i2s->clk_i2s, parent);
 		break;
 	case JZ4740_I2S_CLKSRC_PLL:
 		parent = clk_get(NULL, "pll half");
+		if (IS_ERR(parent))
+			return PTR_ERR(parent);
 		clk_set_parent(i2s->clk_i2s, parent);
 		ret = clk_set_rate(i2s->clk_i2s, freq);
 		break;
-- 
2.26.2


             reply	other threads:[~2020-12-03 14:51 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-03 14:42 Chuhong Yuan [this message]
2020-12-03 14:42 ` [PATCH] ASoC: jz4740-i2s: add missed checks for clk_get() Chuhong Yuan
2020-12-03 16:38 ` Paul Cercueil
2020-12-03 16:38   ` Paul Cercueil
2020-12-04 23:30 ` Mark Brown
2020-12-04 23:30   ` Mark Brown

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201203144227.418194-1-hslester96@gmail.com \
    --to=hslester96@gmail.com \
    --cc=alsa-devel@alsa-project.org \
    --cc=broonie@kernel.org \
    --cc=lars@metafoo.de \
    --cc=lgirdwood@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=paul@crapouillou.net \
    --cc=perex@perex.cz \
    --cc=tiwai@suse.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.