[alsa-devel] [PATCH v2] ASoC: hdac_hdmi: Remove 'edev' NULL check
Commit 4a3478debf36 ("ASoC: hdac_hdmi: Add jack reporting") leads to the following Smatch complaint:
sound/soc/codecs/hdac_hdmi.c:971 hdac_hdmi_present_sense() warn: variable dereferenced before check 'edev' (see line 967)
As explained by Subhransu S. Prusty:
"This NULL check is not required, can be removed.
edev object is expected to be present when the present_sense is called. This is called from places where this edev object is already available."
So remove the evdev NULL check.
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Fabio Estevam fabio.estevam@nxp.com --- Changes since v1: - Remove NULL check (Subhransu)
sound/soc/codecs/hdac_hdmi.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 36f1200..2884dbf 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -968,9 +968,6 @@ static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll) struct hdac_hdmi_pcm *pcm; int val;
- if (!edev) - return; - pin->repoll_count = repoll;
pm_runtime_get_sync(&edev->hdac.dev);
On Wed, Feb 17, 2016 at 09:42:13AM -0200, Fabio Estevam wrote:
Commit 4a3478debf36 ("ASoC: hdac_hdmi: Add jack reporting") leads to the following Smatch complaint:
sound/soc/codecs/hdac_hdmi.c:971 hdac_hdmi_present_sense() warn: variable dereferenced before check 'edev' (see line 967)
As explained by Subhransu S. Prusty:
"This NULL check is not required, can be removed.
edev object is expected to be present when the present_sense is called. This is called from places where this edev object is already available."
So remove the evdev NULL check.
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Fabio Estevam fabio.estevam@nxp.com
Acked-by: Subhransu S. Prusty subhransu.s.prusty@intel.com
Changes since v1:
- Remove NULL check (Subhransu)
sound/soc/codecs/hdac_hdmi.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 36f1200..2884dbf 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -968,9 +968,6 @@ static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll) struct hdac_hdmi_pcm *pcm; int val;
if (!edev)
return;
pin->repoll_count = repoll;
pm_runtime_get_sync(&edev->hdac.dev);
-- 1.9.1
--
The patch
ASoC: hdac_hdmi: Remove 'edev' NULL check
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From cd890ade492784ae06dadd20e688ba1760d3c801 Mon Sep 17 00:00:00 2001
From: Fabio Estevam fabio.estevam@nxp.com Date: Wed, 17 Feb 2016 09:42:13 -0200 Subject: [PATCH] ASoC: hdac_hdmi: Remove 'edev' NULL check
Commit 4a3478debf36 ("ASoC: hdac_hdmi: Add jack reporting") leads to the following Smatch complaint:
sound/soc/codecs/hdac_hdmi.c:971 hdac_hdmi_present_sense() warn: variable dereferenced before check 'edev' (see line 967)
As explained by Subhransu S. Prusty:
"This NULL check is not required, can be removed.
edev object is expected to be present when the present_sense is called. This is called from places where this edev object is already available."
So remove the evdev NULL check.
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Fabio Estevam fabio.estevam@nxp.com Acked-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/hdac_hdmi.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 36f12004ae9c..2884dbf0bc07 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -968,9 +968,6 @@ static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll) struct hdac_hdmi_pcm *pcm; int val;
- if (!edev) - return; - pin->repoll_count = repoll;
pm_runtime_get_sync(&edev->hdac.dev);
participants (3)
-
Fabio Estevam
-
Mark Brown
-
Subhransu S. Prusty