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V4L/DVB: IR/lirc: use memdup_user instead of copy_from_user
author
Jarod Wilson
<jarod@redhat.com>
Fri, 16 Jul 2010 21:29:54 +0000
(18:29 -0300)
committer
Mauro Carvalho Chehab
<mchehab@redhat.com>
Mon, 2 Aug 2010 19:42:56 +0000
(16:42 -0300)
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/IR/ir-lirc-codec.c
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diff --git
a/drivers/media/IR/ir-lirc-codec.c
b/drivers/media/IR/ir-lirc-codec.c
index afb1ada36c78445217abb017d2943aa85e6a8a4e..ee1f2d443ab2b6950bbafe6eb350366cba1bf3c9 100644
(file)
--- a/
drivers/media/IR/ir-lirc-codec.c
+++ b/
drivers/media/IR/ir-lirc-codec.c
@@
-74,14
+74,9
@@
static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf,
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) {