* sound/pci/hda/hda_codec.c:3433 snd_hda_codec_write_cache() error: we previously assumed 'c' could be null (see line 3430)
[not found] <50f05d4a.7Hp1BArd1hLUlQ5B%yuanhan.liu@linux.intel.com>
@ 2013-01-12 2:14 ` Fengguang Wu
0 siblings, 0 replies; only message in thread
From: Fengguang Wu @ 2013-01-12 2:14 UTC (permalink / raw)
To: Takashi Iwai; +Cc: alsa-devel
Hi Takashi,
FYI, there are new smatch warnings show up in
tree: git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-unstable.git master
head: 02e5aa7b459f69538d4ec88658d064816a7692d6
commit: 95836563e7f636fc57732f5e687ca2f170eb674f ALSA: hda - Introduce cache & flush cmd / amp writes
date: 33 hours ago
sound/pci/hda/hda_codec.c:3433 snd_hda_codec_write_cache() error: we previously assumed 'c' could be null (see line 3430)
vim +/c +3433 sound/pci/hda/hda_codec.c
aa2936f5 Takashi Iwai 2009-05-26 3424 /* parm may contain the verb stuff for get/set amp */
aa2936f5 Takashi Iwai 2009-05-26 3425 verb = verb | (parm >> 8);
aa2936f5 Takashi Iwai 2009-05-26 3426 parm &= 0xff;
aa2936f5 Takashi Iwai 2009-05-26 3427 key = build_cmd_cache_key(nid, verb);
aa2936f5 Takashi Iwai 2009-05-26 3428 mutex_lock(&codec->bus->cmd_mutex);
aa2936f5 Takashi Iwai 2009-05-26 3429 c = get_alloc_hash(&codec->cmd_cache, key);
aa2936f5 Takashi Iwai 2009-05-26 @3430 if (c)
aa2936f5 Takashi Iwai 2009-05-26 3431 c->val = parm;
95836563 Takashi Iwai 2012-12-13 3432 if (codec->cached_write)
95836563 Takashi Iwai 2012-12-13 @3433 c->dirty = 1;
aa2936f5 Takashi Iwai 2009-05-26 3434 mutex_unlock(&codec->bus->cmd_mutex);
aa2936f5 Takashi Iwai 2009-05-26 3435 return 0;
b3ac5636 Takashi Iwai 2007-08-10 3436 }
---
0-DAY kernel build testing backend Open Source Technology Center
Fengguang Wu, Yuanhan Liu Intel Corporation
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2013-01-12 2:14 ` sound/pci/hda/hda_codec.c:3433 snd_hda_codec_write_cache() error: we previously assumed 'c' could be null (see line 3430) Fengguang Wu
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