ALSA: HDA: Dont check return for snd_hdac_chip_readl

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>

1 files changed, 0 insertions, 6 deletions

diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c
index b2da19b60f4e..358f16195483 100644
--- a/sound/hda/ext/hdac_ext_controller.c
+++ b/sound/hda/ext/hdac_ext_controller.c
@@ -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));