ALSA: hda/ca0132 - Fix superfluous unsigned check

Fix a warning by smatch,
 sound/pci/hda/patch_ca0132.c:714 dspio_send() warn: always true
 condition '(res >= 0) => (0-u32max >= 0)'

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 467c9a18819b53686e1a31a84c3b6e713da31f13..7668388e8b56c2de0783fdad8bb59ea01aca1abe 100644 (file)
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -1054,7 +1054,7 @@ static void chipio_enable_clocks(struct hda_codec *codec)
 static int dspio_send(struct hda_codec *codec, unsigned int reg,
                      unsigned int data)
 {
-       unsigned int res;
+       int res;
        int retry = 50;
 
        /* send bits of data specified by reg to dsp */