drm/amd/display: Initialize mode_select to 0

[ Upstream commit 592ddac93f8c02e13f19175745465f8c4d0f56cd ]

[WHAT]
mode_select was supposed to be initialized in mpc_read_gamut_remap but
is not set in default case. This can cause indeterminate
behaviors.

This is reported as an UNINIT error by Coverity.

Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/display/dc/mpc/dcn401/dcn401_mpc.c b/drivers/gpu/drm/amd/display/dc/mpc/dcn401/dcn401_mpc.c
index 37ab5a4eefc7cd07be326ba7a052f58aff151cdf..0f531cfd3c49b7c2bab1544c3987fc7158633229 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/mpc/dcn401/dcn401_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/mpc/dcn401/dcn401_mpc.c
@@ -571,7 +571,7 @@ void mpc401_get_gamut_remap(struct mpc *mpc,
        struct mpc_grph_gamut_adjustment *adjust)
 {
        uint16_t arr_reg_val[12] = {0};
-       uint32_t mode_select;
+       uint32_t mode_select = MPCC_GAMUT_REMAP_MODE_SELECT_0;
 
        read_gamut_remap(mpc, mpcc_id, arr_reg_val, adjust->mpcc_gamut_remap_block_id, &mode_select);