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drm/amdgpu: fix&cleanups for wb_clear

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fix:
should do right shift on wb before clearing

cleanups:
1,should memset all wb buffer
2,set max wb number to 128 (total 4KB) is big enough

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu
2017-12-29 17:06:41 +08:00
committed by Alex Deucher
parent 2e7cbbbcf9
commit 7346958551
2 changed files with 4 additions and 3 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -1072,7 +1072,7 @@ static inline void amdgpu_set_ib_value(struct amdgpu_cs_parser *p,
/*
* Writeback
*/
#define AMDGPU_MAX_WB 512 /* Reserve at most 512 WB slots for amdgpu-owned rings. */
#define AMDGPU_MAX_WB 128 /* Reserve at most 128 WB slots for amdgpu-owned rings. */
struct amdgpu_wb {
struct amdgpu_bo *wb_obj;