ALSA: compress: fix the return value for SNDRV_COMPRESS_VERSION
Vinod Koul [Mon, 29 Jul 2013 09:40:22 +0000 (14:40 +0530)]
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@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/core/compress_offload.c

index a58cf35..84717ce 100644 (file)
@@ -582,7 +582,7 @@ static long snd_compr_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
        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):