From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 21 Aug 2016 21:02:06 +0200
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@xxxxxxxxxxxxxxxxxxxxx>
---
sound/core/compress_offload.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 2c49848..583d407 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)
--
2.9.3
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