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| author | Yang Wang <kevinyang.wang@amd.com> | 2026-06-12 10:55:09 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-07-01 11:12:58 -0400 |
| commit | 6a5786e191fdce36c5db170e5209cf609e8f0087 (patch) | |
| tree | fdb3ccac50f2b4d80c88c7bdc322fa50a3fca6b9 | |
| parent | c4f230b51cf2d3e7e8b1c800331f3dbed2a9e3f5 (diff) | |
| download | linux-stable-6a5786e191fdce36c5db170e5209cf609e8f0087.tar.gz linux-stable-6a5786e191fdce36c5db170e5209cf609e8f0087.zip | |
drm/amd/pm: make pp_features read-only when scpm is enabled
SCPM owns power feature control when enabled.
Make pp_features read-only during sysfs setup by clearing its write bits
and store callback.
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/pm/amdgpu_pm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 538b6736e9f8..876793ed150d 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -2703,6 +2703,11 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_ gc_ver != IP_VERSION(9, 4, 3)) || gc_ver < IP_VERSION(9, 0, 0)) *states = ATTR_STATE_UNSUPPORTED; + + if (adev->scpm_enabled) { + dev_attr->attr.mode &= ~S_IWUGO; + dev_attr->store = NULL; + } } else if (DEVICE_ATTR_IS(gpu_metrics)) { if (gc_ver < IP_VERSION(9, 1, 0)) *states = ATTR_STATE_UNSUPPORTED; |