Fixes gcc '-Wunused-but-set-variable' warning:
sound/usb/mixer.c: In function 'parse_audio_feature_unit':
sound/usb/mixer.c:1838:28: warning:
variable 'first_ch_bits' set but not used [-Wunused-but-set-variable]
It never used since 2.6
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
sound/usb/mixer.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index e7d441d..8ad1a24 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1835,7 +1835,7 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
{
int channels, i, j;
struct usb_audio_term iterm;
- unsigned int master_bits, first_ch_bits;
+ unsigned int master_bits;
int err, csize;
struct uac_feature_unit_descriptor *hdr = _ftr;
__u8 *bmaControls;
@@ -1926,10 +1926,6 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
break;
}
- if (channels > 0)
- first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize);
- else
- first_ch_bits = 0;
if (state->mixer->protocol == UAC_VERSION_1) {
/* check all control types */
