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drm/amd/pm: drop unnecessary smu_baco->mutex lock protections(V2)

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As these operations are performed in hardware setup and there
is actually no race conditions during this period considering:
1. the hardware setup is serial and cannot be in parallel
2. all other operations can be performed only after hardware
   setup complete.

V2: rich the commit log description

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2020-08-24 15:18:00 +08:00 committed by Alex Deucher
parent b66effb18a
commit 7ee98e1b34
4 changed files with 1 additions and 12 deletions
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2
drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
View file

@ -386,11 +386,9 @@ static int arcturus_check_powerplay_table(struct smu_context *smu)
table_context->power_play_table;
struct smu_baco_context *smu_baco = &smu->smu_baco;
mutex_lock(&smu_baco->mutex);
if (powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_BACO ||
powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_MACO)
smu_baco->platform_support = true;
mutex_unlock(&smu_baco->mutex);
table_context->thermal_controller_type =
powerplay_table->thermal_controller_type;

2
drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
View file

@ -336,11 +336,9 @@ static int navi10_check_powerplay_table(struct smu_context *smu)
if (powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_HARDWAREDC)
smu->dc_controlled_by_gpio = true;
mutex_lock(&smu_baco->mutex);
if (powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_BACO ||
powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_MACO)
smu_baco->platform_support = true;
mutex_unlock(&smu_baco->mutex);
table_context->thermal_controller_type =
powerplay_table->thermal_controller_type;

2
drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
View file

@ -298,11 +298,9 @@ static int sienna_cichlid_check_powerplay_table(struct smu_context *smu)
table_context->power_play_table;
struct smu_baco_context *smu_baco = &smu->smu_baco;
mutex_lock(&smu_baco->mutex);
if (powerplay_table->platform_caps & SMU_11_0_7_PP_PLATFORM_CAP_BACO ||
powerplay_table->platform_caps & SMU_11_0_7_PP_PLATFORM_CAP_MACO)
smu_baco->platform_support = true;
mutex_unlock(&smu_baco->mutex);
table_context->thermal_controller_type =
powerplay_table->thermal_controller_type;

7
drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
View file

@ -1426,13 +1426,8 @@ static int smu_v11_0_baco_set_armd3_sequence(struct smu_context *smu, enum smu_v
bool smu_v11_0_baco_is_support(struct smu_context *smu)
{
struct smu_baco_context *smu_baco = &smu->smu_baco;
bool baco_support;
mutex_lock(&smu_baco->mutex);
baco_support = smu_baco->platform_support;
mutex_unlock(&smu_baco->mutex);
if (!baco_support)
if (!smu_baco->platform_support)
return false;
/* Arcturus does not support this bit mask */