diff options
| author |   Markus Elfring <elfring@users.sourceforge.net> | 2016-08-21 21:02:06 +0200 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2016-08-22 14:04:18 +0200 |
| commit | c2f14ba749c1ce94aa97c5a84733a89aaaadada4 (patch) | |
| tree | 133bcc943cd5ca94b7f5e4024e0e8f65c8eeba47 /sound/core | |
| parent | ALSA: usb-audio: rmove print for failure of kmalloc (diff) | |
| download | wireguard-linux-c2f14ba749c1ce94aa97c5a84733a89aaaadada4.tar.xz wireguard-linux-c2f14ba749c1ce94aa97c5a84733a89aaaadada4.zip | |
ALSA: compress: Use memdup_user() rather than duplicating its implementation
Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/compress_offload.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 2c498488af6c..583d4076903a 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -553,13 +553,9 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg) * we should allow parameter change only when stream has been * opened not in other cases */ - params = kmalloc(sizeof(*params), GFP_KERNEL); - if (!params) - return -ENOMEM; - if (copy_from_user(params, (void __user *)arg, sizeof(*params))) { - retval = -EFAULT; - goto out; - } + params = memdup_user((void __user *)arg, sizeof(*params)); + if (IS_ERR(params)) + return PTR_ERR(params); retval = snd_compress_check_input(params); if (retval) |