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ALSA: HDA: Dont check return for snd_hdac_chip_readl

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The snd_hdac_chip_readl return can never be less than zeros,
so no point in checking for the return value

This fixes following static checker warnings in
snd_hdac_ext_bus_parse_capabilities

       sound/hda/ext/hdac_ext_controller.c:47
 snd_hdac_ext_bus_parse_capabilities()
       warn: unsigned 'offset' is never less than zero.

       sound/hda/ext/hdac_ext_controller.c:54
 snd_hdac_ext_bus_parse_capabilities()
       warn: unsigned 'cur_cap' is never less than zero.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jeeja KP 2015-08-04 09:28:39 +05:30 committed by Takashi Iwai
parent 9b06dc9394
commit 5d942ce63c
1 changed files with 0 additions and 6 deletions
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6
sound/hda/ext/hdac_ext_controller.c
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@ -44,16 +44,10 @@ int snd_hdac_ext_bus_parse_capabilities(struct hdac_ext_bus *ebus)
offset = snd_hdac_chip_readl(bus, LLCH);
if (offset < 0)
return -EIO;
/* Lets walk the linked capabilities list */
do {
cur_cap = _snd_hdac_chip_read(l, bus, offset);
if (cur_cap < 0)
return -EIO;
dev_dbg(bus->dev, "Capability version: 0x%x\n",
((cur_cap & AZX_CAP_HDR_VER_MASK) >> AZX_CAP_HDR_VER_OFF));