From: Hersen Wu hersenxs.wu@amd.com
[ Upstream commit 176abbcc71952e23009a6ed194fd203b99646884 ]
[Why] For substrcation, coverity reports integer overflow warning message when variable type is uint32_t.
[How] Change varaible type to int32_t.
Reviewed-by: Alex Hung alex.hung@amd.com Reviewed-by: Harry Wentland harry.wentland@amd.com Acked-by: Tom Chung chiahsuan.chung@amd.com Signed-off-by: Hersen Wu hersenxs.wu@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 --- drivers/gpu/drm/amd/display/dc/bios/bios_parser.c | 4 ++-- drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 7 +++++-- 2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c index 6b31904475815..19cd1bd844df9 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c @@ -2552,8 +2552,8 @@ static enum bp_result construct_integrated_info(
/* Sort voltage table from low to high*/ if (result == BP_RESULT_OK) { - uint32_t i; - uint32_t j; + int32_t i; + int32_t j;
for (i = 1; i < NUMBER_OF_DISP_CLK_VOLTAGE; ++i) { for (j = i; j > 0; --j) { diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c index 93720cf069d7c..384ddb28e6f6d 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -2935,8 +2935,11 @@ static enum bp_result construct_integrated_info( struct atom_common_table_header *header; struct atom_data_revision revision;
- uint32_t i; - uint32_t j; + int32_t i; + int32_t j; + + if (!info) + return result;
if (info && DATA_TABLES(integratedsysteminfo)) { header = GET_IMAGE(struct atom_common_table_header,