[PATCH v2 1/2] amdgpu/pm: Fix incorrect variable for size of clocks array

Darren Powell darren.powell at amd.com
Wed May 11 05:44:16 UTC 2022


 [v2]
No Changes, added RB
 [v1]
Size of pp_clock_levels_with_latency is PP_MAX_CLOCK_LEVELS, not MAX_NUM_CLOCKS.
Both are currently defined as 16, modifying in case one value is modified in future
Changed code in both arcturus and aldabaran.

Also removed unneeded var count, and used min_t function

Signed-off-by: Darren Powell <darren.powell at amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c  | 9 +++++----
 drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c | 9 +++++----
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
index 201563072189..bdd1e1a35a12 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
@@ -573,12 +573,13 @@ static int arcturus_get_clk_table(struct smu_context *smu,
 			struct pp_clock_levels_with_latency *clocks,
 			struct smu_11_0_dpm_table *dpm_table)
 {
-	int i, count;
+	uint32_t i;
 
-	count = (dpm_table->count > MAX_NUM_CLOCKS) ? MAX_NUM_CLOCKS : dpm_table->count;
-	clocks->num_levels = count;
+	clocks->num_levels = min_t(uint32_t,
+				   dpm_table->count,
+				   (uint32_t)PP_MAX_CLOCK_LEVELS);
 
-	for (i = 0; i < count; i++) {
+	for (i = 0; i < clocks->num_levels; i++) {
 		clocks->data[i].clocks_in_khz =
 			dpm_table->dpm_levels[i].value * 1000;
 		clocks->data[i].latency_in_us = 0;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index 38af648cb857..6a4fca47ae53 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -549,12 +549,13 @@ static int aldebaran_get_clk_table(struct smu_context *smu,
 				   struct pp_clock_levels_with_latency *clocks,
 				   struct smu_13_0_dpm_table *dpm_table)
 {
-	int i, count;
+	uint32_t i;
 
-	count = (dpm_table->count > MAX_NUM_CLOCKS) ? MAX_NUM_CLOCKS : dpm_table->count;
-	clocks->num_levels = count;
+	clocks->num_levels = min_t(uint32_t,
+				   dpm_table->count,
+				   (uint32_t)PP_MAX_CLOCK_LEVELS);
 
-	for (i = 0; i < count; i++) {
+	for (i = 0; i < clocks->num_levels; i++) {
 		clocks->data[i].clocks_in_khz =
 			dpm_table->dpm_levels[i].value * 1000;
 		clocks->data[i].latency_in_us = 0;

base-commit: 8bb14fbec5ae45c31cbefe217db2418cc683612f
-- 
2.35.1



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