From: wu000273@umn.edu To: kjlu@umn.edu Cc: wu000273@umn.edu, Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH] ASoC: img-parallel-out: Fix a reference count leak Date: Sat, 13 Jun 2020 22:33:43 -0500 [thread overview] Message-ID: <20200614033344.1814-1-wu000273@umn.edu> (raw) From: Qiushi Wu <wu000273@umn.edu> pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code, causing incorrect ref count if pm_runtime_put_noidle() is not called in error handling paths. Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails. Signed-off-by: Qiushi Wu <wu000273@umn.edu> --- sound/soc/img/img-parallel-out.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c index 5ddbe3a31c2e..4da49a42e854 100644 --- a/sound/soc/img/img-parallel-out.c +++ b/sound/soc/img/img-parallel-out.c @@ -163,8 +163,10 @@ static int img_prl_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) } ret = pm_runtime_get_sync(prl->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(prl->dev); return ret; + } reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL); reg = (reg & ~IMG_PRL_OUT_CTL_EDGE_MASK) | control_set; -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: wu000273@umn.edu To: kjlu@umn.edu Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Takashi Iwai <tiwai@suse.com>, Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, wu000273@umn.edu Subject: [PATCH] ASoC: img-parallel-out: Fix a reference count leak Date: Sat, 13 Jun 2020 22:33:43 -0500 [thread overview] Message-ID: <20200614033344.1814-1-wu000273@umn.edu> (raw) From: Qiushi Wu <wu000273@umn.edu> pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code, causing incorrect ref count if pm_runtime_put_noidle() is not called in error handling paths. Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails. Signed-off-by: Qiushi Wu <wu000273@umn.edu> --- sound/soc/img/img-parallel-out.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c index 5ddbe3a31c2e..4da49a42e854 100644 --- a/sound/soc/img/img-parallel-out.c +++ b/sound/soc/img/img-parallel-out.c @@ -163,8 +163,10 @@ static int img_prl_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) } ret = pm_runtime_get_sync(prl->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(prl->dev); return ret; + } reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL); reg = (reg & ~IMG_PRL_OUT_CTL_EDGE_MASK) | control_set; -- 2.17.1
next reply other threads:[~2020-06-14 3:34 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-14 3:33 wu000273 [this message] 2020-06-14 3:33 ` [PATCH] ASoC: img-parallel-out: Fix a reference count leak wu000273 2020-06-15 23:40 ` Mark Brown 2020-06-15 23:40 ` 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=20200614033344.1814-1-wu000273@umn.edu \ --to=wu000273@umn.edu \ --cc=alsa-devel@alsa-project.org \ --cc=broonie@kernel.org \ --cc=kjlu@umn.edu \ --cc=lgirdwood@gmail.com \ --cc=linux-kernel@vger.kernel.org \ --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: linkBe 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.