media: rc-loopback: return number of emitters rather than error

commit 6b7f554be8c92319d7e6df92fd247ebb9beb4a45 upstream.

The LIRC_SET_TRANSMITTER_MASK ioctl should return the number of emitters
if an invalid list was set.

Cc: stable@vger.kernel.org
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/rc/rc-loopback.c b/drivers/media/rc/rc-loopback.c
index 1ba3f96ffa7dcbb118d5654ce82ed73f762a9655..40ab66c850f230f7e2f257a24f54e0effa057901 100644 (file)
--- a/drivers/media/rc/rc-loopback.c
+++ b/drivers/media/rc/rc-loopback.c
@@ -42,7 +42,7 @@ static int loop_set_tx_mask(struct rc_dev *dev, u32 mask)
 
        if ((mask & (RXMASK_REGULAR | RXMASK_LEARNING)) != mask) {
                dprintk("invalid tx mask: %u\n", mask);
-               return -EINVAL;
+               return 2;
        }
 
        dprintk("setting tx mask: %u\n", mask);