From: Leo Li <sunpeng.li@xxxxxxx>
Using a static int array will cause errors if the given dm_pp_clk_type
is out-of-bounds. For robustness, use a switch table, with a default
case to handle all invalid values.
Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
---
.../amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c | 38 +++++++++++++------
1 file changed, 26 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
index 20e82c9f6d67..df1efb8238d6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
@@ -152,18 +152,32 @@ static void get_default_clock_levels(
static enum smu_clk_type dc_to_smu_clock_type(
enum dm_pp_clock_type dm_pp_clk_type)
{
-#define DCCLK_MAP_SMUCLK(dcclk, smuclk) \
- [dcclk] = smuclk
-
- static int dc_clk_type_map[] = {
- DCCLK_MAP_SMUCLK(DM_PP_CLOCK_TYPE_DISPLAY_CLK, SMU_DISPCLK),
- DCCLK_MAP_SMUCLK(DM_PP_CLOCK_TYPE_ENGINE_CLK, SMU_GFXCLK),
- DCCLK_MAP_SMUCLK(DM_PP_CLOCK_TYPE_MEMORY_CLK, SMU_MCLK),
- DCCLK_MAP_SMUCLK(DM_PP_CLOCK_TYPE_DCEFCLK, SMU_DCEFCLK),
- DCCLK_MAP_SMUCLK(DM_PP_CLOCK_TYPE_SOCCLK, SMU_SOCCLK),
- };
-
- return dc_clk_type_map[dm_pp_clk_type];
+ enum smu_clk_type smu_clk_type = 0;
+
+ switch (dm_pp_clk_type) {
+ case DM_PP_CLOCK_TYPE_DISPLAY_CLK:
+ smu_clk_type = SMU_DISPCLK;
+ break;
+ case DM_PP_CLOCK_TYPE_ENGINE_CLK:
+ smu_clk_type = SMU_GFXCLK;
+ break;
+ case DM_PP_CLOCK_TYPE_MEMORY_CLK:
+ smu_clk_type = SMU_MCLK;
+ break;
+ case DM_PP_CLOCK_TYPE_DCEFCLK:
+ smu_clk_type = SMU_DCEFCLK;
+ break;
+ case DM_PP_CLOCK_TYPE_SOCCLK:
+ smu_clk_type = SMU_SOCCLK;
+ break;
+ default:
+ DRM_ERROR("DM_PPLIB: invalid clock type: %d!\n",
+ dm_pp_clk_type);
+ smu_clk_type = 0;
+ break;
+ }
+
+ return smu_clk_type;
}
static enum amd_pp_clock_type dc_to_pp_clock_type(
--
2.22.0
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