ALSA: usb-audio: fix return values

-1 is not a good return value as it means -EPERM, "not permitted".
Choose -ENOTSUPP instead, which is what the code really wants to tell
its callers.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/format.c b/sound/usb/format.c
index caaa3ef..fe29d61 100644 (file)
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -408,7 +408,7 @@ int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *f
                snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
                           chip->dev->devnum, fp->iface, fp->altsetting,
                           fmt->bFormatType);
-               return -1;
+               return -ENOTSUPP;
        }
        fp->fmt_type = fmt->bFormatType;
        if (err < 0)
@@ -424,7 +424,7 @@ int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *f
                if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
                    fp->rates != SNDRV_PCM_RATE_48000 &&
                    fp->rates != SNDRV_PCM_RATE_96000)
-                       return -1;
+                       return -ENOTSUPP;
        }
 #endif
        return 0;