V4L/DVB: IR/lirc: use memdup_user instead of copy_from_user
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/IR/ir-lirc-codec.c b/drivers/media/IR/ir-lirc-codec.c
index afb1ada..ee1f2d4 100644
--- a/drivers/media/IR/ir-lirc-codec.c
+++ b/drivers/media/IR/ir-lirc-codec.c
@@ -74,14 +74,9 @@
if (count > LIRCBUF_SIZE || count % 2 == 0)
return -EINVAL;
- txbuf = kzalloc(sizeof(int) * LIRCBUF_SIZE, GFP_KERNEL);
- if (!txbuf)
- return -ENOMEM;
-
- if (copy_from_user(txbuf, buf, n)) {
- ret = -EFAULT;
- goto out;
- }
+ txbuf = memdup_user(buf, n);
+ if (IS_ERR(txbuf))
+ return PTR_ERR(txbuf);
ir_dev = lirc->ir_dev;
if (!ir_dev) {