linux-kernel - [ 021/102] ALSA: compress: fix the return value for SNDRV_COMPRESS

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Date:	Thu,  8 Aug 2013 18:56:57 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Haynes <hgeorge@...eaurora.org>,
	Vinod Koul <vinod.koul@...el.com>, Takashi Iwai <tiwai@...e.de>
Subject: [ 021/102] ALSA: compress: fix the return value for SNDRV_COMPRESS_VERSION

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vinod Koul <vinod.koul@...el.com>

commit a8d30608eaed6cc759b8e2e8a8bbbb42591f797f upstream.

the return value of SNDRV_COMPRESS_VERSION always return default -ENOTTY as the
return value was never updated for this call
assign return value from put_user()

Reported-by: Haynes <hgeorge@...eaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@...el.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/core/compress_offload.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -743,7 +743,7 @@ static long snd_compr_ioctl(struct file
 	mutex_lock(&stream->device->lock);
 	switch (_IOC_NR(cmd)) {
 	case _IOC_NR(SNDRV_COMPRESS_IOCTL_VERSION):
-		put_user(SNDRV_COMPRESS_VERSION,
+		retval = put_user(SNDRV_COMPRESS_VERSION,
 				(int __user *)arg) ? -EFAULT : 0;
 		break;
 	case _IOC_NR(SNDRV_COMPRESS_GET_CAPS):


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