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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>
This commit is contained in:
Jarod Wilson 2010-07-16 18:29:54 -03:00 committed by Mauro Carvalho Chehab
parent 5690085e7b
commit 6efb870a11
1 changed files with 3 additions and 8 deletions
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11
drivers/media/IR/ir-lirc-codec.c
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@ -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) {