ALSA: usb-audio: Return meaningful error codes instead of -1 in format.c

Also, silences the following smatch warning:
sound/usb/format.c:170 parse_audio_format_rates_v1() warn:
returning -1 instead of -ENOMEM is sloppy

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/sound/usb/format.c b/sound/usb/format.c
index ddfef57c4c9f..e831ee4238bb 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -155,7 +155,7 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
         if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
                 snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
                                    chip->dev->devnum, fp->iface, fp->altsetting);
-                return -1;
+                return -EINVAL;
         }
 
         if (nr_rates) {
@@ -167,7 +167,7 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
                 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
                 if (fp->rate_table == NULL) {
                         snd_printk(KERN_ERR "cannot malloc\n");
-                        return -1;
+                        return -ENOMEM;
                 }
 
                 fp->nr_rates = 0;
@@ -198,7 +198,7 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
                 }
                 if (!fp->nr_rates) {
                         hwc_debug("All rates were zero. Skipping format!\n");
-                        return -1;
+                        return -EINVAL;
                 }
         } else {
                 /* continuous rates */
@@ -383,7 +383,7 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
                 fp->formats = parse_audio_format_i_type(chip, fp, format,
                                                         fmt, protocol);
                 if (!fp->formats)
-                        return -1;
+                        return -EINVAL;
         }
 
         /* gather possible sample rates */
@@ -409,7 +409,7 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
         if (fp->channels < 1) {
                 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
                            chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
-                return -1;
+                return -EINVAL;
         }
 
         return ret;