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drm/amd/display: fixed integer types and null check locations

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commit 0484e05d04 upstream.

[why]:
issues fixed:
- comparison with wider integer type in loop condition which can cause
infinite loops
- pointer dereference before null check

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Josip Pavic <josip.pavic@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Sohaib Nadeem <sohaib.nadeem@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ delete changes made in drivers/gpu/drm/amd/display/dc/link/link_validation.c
  for this file is not present in linux-6.1.y  ]
Signed-off-by: Jianqi Ren <jianqi.ren.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sohaib Nadeem
2025-03-07 16:56:50 +01:00
committed by Greg Kroah-Hartman
parent ee3ab05cf7
commit 070fda699d
1 changed files with 10 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+10 -6
View File
@@ -1862,19 +1862,21 @@ static enum bp_result get_firmware_info_v3_2(
/* Vega12 */
smu_info_v3_2 = GET_IMAGE(struct atom_smu_info_v3_2,
DATA_TABLES(smu_info));
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_2->gpuclk_ss_percentage);
if (!smu_info_v3_2)
return BP_RESULT_BADBIOSTABLE;
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_2->gpuclk_ss_percentage);
info->default_engine_clk = smu_info_v3_2->bootup_dcefclk_10khz * 10;
} else if (revision.minor == 3) {
/* Vega20 */
smu_info_v3_3 = GET_IMAGE(struct atom_smu_info_v3_3,
DATA_TABLES(smu_info));
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_3->gpuclk_ss_percentage);
if (!smu_info_v3_3)
return BP_RESULT_BADBIOSTABLE;
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_3->gpuclk_ss_percentage);
info->default_engine_clk = smu_info_v3_3->bootup_dcefclk_10khz * 10;
}
@@ -2439,10 +2441,11 @@ static enum bp_result get_integrated_info_v11(
info_v11 = GET_IMAGE(struct atom_integrated_system_info_v1_11,
DATA_TABLES(integratedsysteminfo));
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v11->gpuclk_ss_percentage);
if (info_v11 == NULL)
return BP_RESULT_BADBIOSTABLE;
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v11->gpuclk_ss_percentage);
info->gpu_cap_info =
le32_to_cpu(info_v11->gpucapinfo);
/*
@@ -2654,11 +2657,12 @@ static enum bp_result get_integrated_info_v2_1(
info_v2_1 = GET_IMAGE(struct atom_integrated_system_info_v2_1,
DATA_TABLES(integratedsysteminfo));
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_1->gpuclk_ss_percentage);
if (info_v2_1 == NULL)
return BP_RESULT_BADBIOSTABLE;
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_1->gpuclk_ss_percentage);
info->gpu_cap_info =
le32_to_cpu(info_v2_1->gpucapinfo);
/*
@@ -2816,11 +2820,11 @@ static enum bp_result get_integrated_info_v2_2(
info_v2_2 = GET_IMAGE(struct atom_integrated_system_info_v2_2,
DATA_TABLES(integratedsysteminfo));
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_2->gpuclk_ss_percentage);
if (info_v2_2 == NULL)
return BP_RESULT_BADBIOSTABLE;
DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_2->gpuclk_ss_percentage);
info->gpu_cap_info =
le32_to_cpu(info_v2_2->gpucapinfo);
/*