media: ir_toy: prevent device from hanging during transmit

[ Upstream commit 4114978dcd24e72415276bba60ff4ff355970bbc ]

If the IR Toy is receiving IR while a transmit is done, it may end up
hanging. We can prevent this from happening by re-entering sample mode
just before issuing the transmit command.

Link: https://github.com/bengtmartensson/HarcHardware/discussions/25
Cc: stable@vger.kernel.org
[mchehab: renamed: s/STATE_RESET/STATE_COMMAND_NO_RESP/ ]
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/rc/ir_toy.c b/drivers/media/rc/ir_toy.c
index 7f394277478b32ae0c461dfc3949249194775b90..53ae19fa103abe05b5da1e84055ee553fe089b0c 100644 (file)
--- a/drivers/media/rc/ir_toy.c
+++ b/drivers/media/rc/ir_toy.c
@@ -310,7 +310,7 @@ static int irtoy_tx(struct rc_dev *rc, uint *txbuf, uint count)
                buf[i] = cpu_to_be16(v);
        }
 
-       buf[count] = cpu_to_be16(0xffff);
+       buf[count] = 0xffff;
 
        irtoy->tx_buf = buf;
        irtoy->tx_len = size;