At Thu, 16 Sep 2010 20:13:47 +0200, Dan Carpenter wrote:
"uinfo->value.enumerated.item" is an unsigned int. If it's negative when we do the comparison: if ((int)uinfo->value.enumerated.item >= cval->max) then we would read past the end of the array on the next line.
This cast was for the old crappy gcc who spews bogus warnings when compared with signed and unsigned ints. The kernel sets a compile flag for avoiding this since long time ago, so we can get rid of such cast gracefully now, indeed.
I also changed the strcpy() to strlcpy() out of paranoia.
Signed-off-by: Dan Carpenter error27@gmail.com
Applied now. Thanks.
Takashi
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 3ed3901..93c95c5 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1642,9 +1642,10 @@ static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = cval->max;
- if ((int)uinfo->value.enumerated.item >= cval->max)
- if (uinfo->value.enumerated.item >= cval->max) uinfo->value.enumerated.item = cval->max - 1;
- strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
- strlcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item],
sizeof(uinfo->value.enumerated.name));}