[alsa-devel] [PATCH v2] ASoC: hdac_hdmi: Remove 'edev' NULL check

Fabio Estevam fabio.estevam at nxp.com
Wed Feb 17 12:42:13 CET 2016


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 at oracle.com>
Signed-off-by: Fabio Estevam <fabio.estevam at 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);
-- 
1.9.1



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