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drm/amd/display: fix signedness bug in execute_synaptics_rc_command()

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[ 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@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2022-07-26 18:15:31 +03:00 committed by Greg Kroah-Hartman
parent 7e48502e84
commit d080c5c548
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
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@ -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