From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Wed, 21 Nov 2012 09:55:56 +0000 (+0530)
Subject: ALSA: usb-audio: Return meaningful error codes instead of -1 in format.c
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~39^2~84
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=8ad10dc6d3fe8396d8213af4d5ce58e0010a3cbc

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>
---

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;