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| author | Srinivasan Shanmugam <[email protected]> | 2023-08-04 05:46:41 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2023-08-30 19:51:17 +0000 |
| commit | bf227a4f0558320513b86c279996021480f9e750 (patch) | |
| tree | daf32c9e6e4e6143165ea41b1263c096d31b1b0d /drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | |
| parent | drm/amdgpu: remove unused parameter in amdgpu_vmid_grab_idle (diff) | |
| download | kernel-bf227a4f0558320513b86c279996021480f9e750.tar.gz kernel-bf227a4f0558320513b86c279996021480f9e750.zip | |
drm/amdgpu: Use READ_ONCE() when reading the values in 'sdma_v4_4_2_ring_get_rptr'
Use READ_ONCE() instead of declaring the pointer volatile. To prevent
the compiler from refetching or reordering the read, so that the read
value is always consistent.
Link: https://lwn.net/Articles/624126/
Cc: Felix Kuehling <[email protected]>
Cc: Guchun Chen <[email protected]>
Cc: Christian König <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: "Pan, Xinhui" <[email protected]>
Cc: Le Ma <[email protected]>
Cc: Hawking Zhang <[email protected]>
Signed-off-by: Srinivasan Shanmugam <[email protected]>
Reviewed-by: Le Ma <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c')
0 files changed, 0 insertions, 0 deletions