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| author | Desmond Cheong Zhi Xi <[email protected]> | 2021-07-24 11:18:22 +0000 |
|---|---|---|
| committer | Daniel Vetter <[email protected]> | 2021-07-28 21:19:58 +0000 |
| commit | 28be2405fb753927e18bc1a891617a430b2a0684 (patch) | |
| tree | f89e80dbe10270475f16bc34b56742ede4e148a9 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | drm/vmwgfx: Use 2.19 version number to recognize mks-stats ioctls (diff) | |
| download | kernel-28be2405fb753927e18bc1a891617a430b2a0684.tar.gz kernel-28be2405fb753927e18bc1a891617a430b2a0684.zip | |
drm: use the lookup lock in drm_is_current_master
Inside drm_is_current_master, using the outer drm_device.master_mutex
to protect reads of drm_file.master makes the function prone to creating
lock hierarchy inversions. Instead, we can use the
drm_file.master_lookup_lock that sits at the bottom of the lock
hierarchy.
Reported-by: Daniel Vetter <[email protected]>
Signed-off-by: Desmond Cheong Zhi Xi <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
0 files changed, 0 insertions, 0 deletions