From: Sean Young <sean@mess.org>
Date: Sat, 3 Jul 2021 13:37:17 +0000 (+0200)
Subject: media: rc-loopback: return number of emitters rather than error
X-Git-Tag: v5.13.19~335
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f235a8bad77e6daeec7fa8b59413cbf1ed94b97d;p=thirdparty%2Fkernel%2Fstable.git

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 1ba3f96ffa7dc..40ab66c850f23 100644
--- 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);