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| author | Lijo Lazar <[email protected]> | 2025-04-16 06:53:44 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2025-04-30 22:03:02 +0000 |
| commit | 75f138db48c5c493f0ac198c2579d52fc6a4c4a0 (patch) | |
| tree | 3751c7303e570b082ad586957f2036933fa30d2c /drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | |
| parent | drm/amd/display: Fix NULL pointer dereferences in dm_update_crtc_state() v2 (diff) | |
| download | kernel-75f138db48c5c493f0ac198c2579d52fc6a4c4a0.tar.gz kernel-75f138db48c5c493f0ac198c2579d52fc6a4c4a0.zip | |
drm/amdgpu: Disallow partition query during reset
Reject queries to get current partition modes during reset. Also, don't
accept sysfs interface requests to switch compute partition mode while
in reset.
Signed-off-by: Lijo Lazar <[email protected]>
Reviewed-by: Hawking Zhang <[email protected]>
Reviewed-by: Asad Kamal <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index ecb74ccf1d90..6b0fbbb91e57 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -1230,6 +1230,10 @@ static ssize_t current_memory_partition_show( struct amdgpu_device *adev = drm_to_adev(ddev); enum amdgpu_memory_partition mode; + /* Only minimal precaution taken to reject requests while in reset */ + if (amdgpu_in_reset(adev)) + return -EPERM; + mode = adev->gmc.gmc_funcs->query_mem_partition_mode(adev); if ((mode >= ARRAY_SIZE(nps_desc)) || (BIT(mode) & AMDGPU_ALL_NPS_MASK) != BIT(mode)) |