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Commit 6efb870a authored by Jarod Wilson's avatar Jarod Wilson Committed by Mauro Carvalho Chehab
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V4L/DVB: IR/lirc: use memdup_user instead of copy_from_user 



Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 5690085e

drivers/media/IR/ir-lirc-codec.c

+3 −8
Original line number Diff line number Diff line
@@ -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) {