kernel/drivers/gpu/drm/amd/pm/amdgpu_dpm.c, branch master

drm/amd/pm: fix race in power state check before mutex lock

2026-01-27T23:11:27Z

The power state check in amdgpu_dpm_set_powergating_by_smu() is done before acquiring the pm mutex, leading to a race condition where: 1. Thread A checks state and thinks no change is needed 2. Thread B acquires mutex and modifies the state 3. Thread A returns without updating state, causing inconsistency Fix this by moving the mutex lock before the power state check, ensuring atomicity of the state check and modification. Fixes: 6ee27ee27ba8 ("drm/amd/pm: avoid duplicate powergate/ungate setting") Signed-off-by: Yang Wang Reviewed-by: Kenneth Feng Signed-off-by: Alex Deucher

drm/amd/pm: Return -EOPNOTSUPP when can't read power limit

2026-01-21T19:22:11Z

So that hwmon_attributes_visible() will see that the power2_cap attributes should not be visible on GPUs that don't support the get_power_limit() function. This fixes an error when running the "sensors" command on SI. Fixes: 12c958d1db36 ("drm/amd/pm: Expose ppt1 limit for gc_v9_5_0") Reviewed-by: Alex Deucher Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher

drm/amd: Convert DRM_() to drm_()

2026-01-05T21:59:55Z

The drm_*() macros include the device which is helpful for debugging issues in multi-GPU systems. Signed-off-by: Mario Limonciello (AMD) Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/pm: Deprecate print_clock_levels interface

2025-12-08T19:14:35Z

Use emit_clock_levels instead of print_clock_levels Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amd/pm: adjust the visibility of pp_table sysfs node

2025-11-24T17:36:12Z

v1: - make pp_table invisible on VF mode (only valid on BM) - make pp_table invisible on Mi* chips (Not supported) - make pp_table invisible if scpm feature is enabled. v2: move pp_table invisible code logic into amdgpu_dpm_get_pp_table() function. v3: add table buffer pointer check both on powerplay & swsmu. Signed-off-by: Yang Wang Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amd/pm: add smu ras driver framework

2025-11-04T16:53:58Z

add functions to get smu ras driver Signed-off-by: Gangliang Xie Signed-off-by: Yang Wang Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher

drm/amdgpu: Drop PMFW RLC notifier from amdgpu_device_suspend()

2025-11-04T16:52:48Z

For S3 on vangogh, PMFW needs to be notified before the driver powers down RLC. This already happens in smu_disable_dpms() so drop the superfluous call in amdgpu_device_suspend(). Co-developed-by: Mario Limonciello (AMD) Reviewed-by: Alex Deucher Signed-off-by: Mario Limonciello (AMD) Signed-off-by: Alex Deucher

drm/amd: Stop overloading power limit with limit type

2025-10-13T18:14:35Z

When passed around internally the upper 8 bits of power limit include the limit type. This is non-obvious without digging into the nuances of each function. Instead pass the limit type as an argument to all applicable layers. Reviewed-by: Lijo Lazar Signed-off-by: Mario Limonciello Signed-off-by: Alex Deucher

drm/amd/pm: Add VCN reset support check capability

2025-08-15T17:04:25Z

This change introduces infrastructure to check whether VCN reset is supported by the SMU firmware. Key changes include: 1. Added new functions to query VCN reset support: - amdgpu_dpm_reset_vcn_is_supported() - smu_reset_vcn_is_supported() - pptable_funcs.reset_vcn_is_supported callback 2. Implemented proper locking in the DPM layer with mutex protection 3. Maintained consistency with existing SDMA reset support checks The new capability allows callers to check for VCN reset support before attempting the operation, preventing unnecessary attempts on unsupported platforms. v2: clean up debug info(Alex) Suggested-by: Alex Deucher Signed-off-by: Ruili Ji Signed-off-by: Jesse Zhang Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Generate BP threshold exceed CPER once threshold exceeded

2025-08-06T18:21:01Z

The bad pages threshold exceed CPER should be generated once threshold exceeded, no matter the bad_page_threshold setted or not. Signed-off-by: Xiang Liu Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher