linux-phytec-ti

ALSA: oss: underflow in snd_mixer_oss_proc_write()

We cap the upper bound of "idx" but not the negative side.  Let's make
it unsigned to fix this.

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