This is a note to let you know that I've just added the patch titled
drm/amd/display: fix signedness bug in execute_synaptics_rc_command()
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-fix-signedness-bug-in-execute_synapt.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 99ee2b6538de3c9f9f9468d33dff5275c87ebd1d
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Tue Jul 26 18:15:31 2022 +0300
drm/amd/display: fix signedness bug in execute_synaptics_rc_command()
[ Upstream commit 06ac561fb0edf868f7b292fb4a3c8ffbbb1e14bb ]
The "ret" variable needs to be signed for the error handling to work.
Fixes: 2ca97adccdc9 ("drm/amd/display: Add Synaptics Fifo Reset Workaround")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 7c799ddc1d27..82c04af09d18 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -571,7 +571,7 @@ static bool execute_synaptics_rc_command(struct drm_dp_aux *aux,
unsigned char rc_cmd = 0;
unsigned char rc_result = 0xFF;
unsigned char i = 0;
- uint8_t ret = 0;
+ int ret;
if (is_write_cmd) {
// write rc data
