[PATCH AUTOSEL 6.10 05/34] drm/amdgpu/pm: Fix the param type of set_power_profile_mode

Sasha Levin
2024-07-28T15:43:01Z

From: Ma Jun <Jun.Ma2@amd.com>

[ Upstream commit f683f24093dd94a831085fe0ea8e9dc4c6c1a2d1 ]

Function .set_power_profile_mode need an array as input
parameter. So define variable workload as an array to fix
the below coverity warning.

"Passing &workload to function hwmgr->hwmgr_func->set_power_profile_mode
which uses it as an array. This might corrupt or misinterpret adjacent
memory locations"

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 8 ++++----
drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c | 8 ++++----
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 16 ++++++++--------
3 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index 5fb21a0508cd9..f531ce1d2b1dc 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -929,7 +929,7 @@ static int pp_dpm_switch_power_profile(void *handle,
enum PP_SMC_POWER_PROFILE type, bool en)
{
struct pp_hwmgr *hwmgr = handle;
- long workload;
+ long workload[1];
uint32_t index;

if (!hwmgr || !hwmgr->pm_en)
@@ -947,12 +947,12 @@ static int pp_dpm_switch_power_profile(void *handle,
hwmgr->workload_mask &= ~(1 << hwmgr->workload_prority[type]);
index = fls(hwmgr->workload_mask);
index = index > 0 && index <= Workload_Policy_Max ? index - 1 : 0;
- workload = hwmgr->workload_setting[index];
+ workload[0] = hwmgr->workload_setting[index];
} else {
hwmgr->workload_mask |= (1 << hwmgr->workload_prority[type]);
index = fls(hwmgr->workload_mask);
index = index <= Workload_Policy_Max ? index - 1 : 0;
- workload = hwmgr->workload_setting[index];
+ workload[0] = hwmgr->workload_setting[index];
}

if (type == PP_SMC_POWER_PROFILE_COMPUTE &&
@@ -962,7 +962,7 @@ static int pp_dpm_switch_power_profile(void *handle,
}

if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL)
- hwmgr->hwmgr_func->set_power_profile_mode(hwmgr, &workload, 0);
+ hwmgr->hwmgr_func->set_power_profile_mode(hwmgr, workload, 0);

return 0;
}
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c
index 1d829402cd2e2..f4bd8e9357e22 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c
@@ -269,7 +269,7 @@ int psm_adjust_power_state_dynamic(struct pp_hwmgr *hwmgr, bool skip_display_set
struct pp_power_state *new_ps)
{
uint32_t index;
- long workload;
+ long workload[1];

if (hwmgr->not_vf) {
if (!skip_display_settings)
@@ -294,10 +294,10 @@ int psm_adjust_power_state_dynamic(struct pp_hwmgr *hwmgr, bool skip_display_set
if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL) {
index = fls(hwmgr->workload_mask);
index = index > 0 && index <= Workload_Policy_Max ? index - 1 : 0;
- workload = hwmgr->workload_setting[index];
+ workload[0] = hwmgr->workload_setting[index];

- if (hwmgr->power_profile_mode != workload && hwmgr->hwmgr_func->set_power_profile_mode)
- hwmgr->hwmgr_func->set_power_profile_mode(hwmgr, &workload, 0);
+ if (hwmgr->power_profile_mode != workload[0] && hwmgr->hwmgr_func->set_power_profile_mode)
+ hwmgr->hwmgr_func->set_power_profile_mode(hwmgr, workload, 0);
}

return 0;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index e1796ecf9c05c..06409133b09b1 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2220,7 +2220,7 @@ static int smu_adjust_power_state_dynamic(struct smu_context *smu,
{
int ret = 0;
int index = 0;
- long workload;
+ long workload[1];
struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);

if (!skip_display_settings) {
@@ -2260,10 +2260,10 @@ static int smu_adjust_power_state_dynamic(struct smu_context *smu,
smu_dpm_ctx->dpm_level != AMD_DPM_FORCED_LEVEL_PERF_DETERMINISM) {
index = fls(smu->workload_mask);
index = index > 0 && index <= WORKLOAD_POLICY_MAX ? index - 1 : 0;
- workload = smu->workload_setting[index];
+ workload[0] = smu->workload_setting[index];

- if (smu->power_profile_mode != workload)
- smu_bump_power_profile_mode(smu, &workload, 0);
+ if (smu->power_profile_mode != workload[0])
+ smu_bump_power_profile_mode(smu, workload, 0);
}

return ret;
@@ -2313,7 +2313,7 @@ static int smu_switch_power_profile(void *handle,
{
struct smu_context *smu = handle;
struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
- long workload;
+ long workload[1];
uint32_t index;

if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
@@ -2326,17 +2326,17 @@ static int smu_switch_power_profile(void *handle,
smu->workload_mask &= ~(1 << smu->workload_prority[type]);
index = fls(smu->workload_mask);
index = index > 0 && index <= WORKLOAD_POLICY_MAX ? index - 1 : 0;
- workload = smu->workload_setting[index];
+ workload[0] = smu->workload_setting[index];
} else {
smu->workload_mask |= (1 << smu->workload_prority[type]);
index = fls(smu->workload_mask);
index = index <= WORKLOAD_POLICY_MAX ? index - 1 : 0;
- workload = smu->workload_setting[index];
+ workload[0] = smu->workload_setting[index];
}

if (smu_dpm_ctx->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL &&
smu_dpm_ctx->dpm_level != AMD_DPM_FORCED_LEVEL_PERF_DETERMINISM)
- smu_bump_power_profile_mode(smu, &workload, 0);
+ smu_bump_power_profile_mode(smu, workload, 0);

return 0;
}
--
2.43.0