ALSA: usb-audio: Fix comment

Explained by Takashi in <s5hfwbtmz0q.wl%tiwai@suse.de>

> The reason is because get_min_max*() isn't called in the place you
> created these controls, and get_min_max() would be called only for
> integer volumes later even if uninitialized.  A short cut for booleans.

Signed-off-by: Mark Hills <mark@pogo.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 10 deletions

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 12125ca7167..41f4b691192 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -79,16 +79,8 @@ static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
         cval->control = control;
         cval->cmask = cmask;
 
-        /* FIXME: Do we need this?
-         * The following values are for compatibility with
-         * Ebox-44 mixer.
-         * But the corresponding ebox-44 function says:
-         *    "Volume controls will override these values"
-         *
-         * These values don't have any effect at all for
-         * M-Audio FTUs.
-         * So I think, we can safely omit the range settings here.
-         */
+        /* get_min_max() is called only for integer volumes later,
+         * so provide a short-cut for booleans */
         cval->min = 0;
         cval->max = 1;
         cval->res = 0;