diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2017-03-24 14:47:18 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-29 23:55:44 -0400 |
| commit | 2572c24ca9f4a427b876f3e7718097e9c4b9ddc7 (patch) | |
| tree | 052bc8b918e78dd9b44f9326efa889f2fb2a8520 | |
| parent | f2713e8c2a34711ed820a3095a7c5f4a0c85df1c (diff) | |
drm/amdgpu/gfx9: use hweight for calculating num_rbs
Match what we do for other asics.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 7666add21519..6139dd079c70 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -1231,7 +1231,7 @@ static u32 gfx_v9_0_get_rb_active_bitmap(struct amdgpu_device *adev) static void gfx_v9_0_setup_rb(struct amdgpu_device *adev) { int i, j; - u32 data, tmp, num_rbs = 0; + u32 data; u32 active_rbs = 0; u32 rb_bitmap_width_per_sh = adev->gfx.config.max_backends_per_se / adev->gfx.config.max_sh_per_se; @@ -1249,10 +1249,7 @@ static void gfx_v9_0_setup_rb(struct amdgpu_device *adev) mutex_unlock(&adev->grbm_idx_mutex); adev->gfx.config.backend_enable_mask = active_rbs; - tmp = active_rbs; - while (tmp >>= 1) - num_rbs++; - adev->gfx.config.num_rbs = num_rbs; + adev->gfx.config.num_rbs = hweight32(active_rbs); } #define DEFAULT_SH_MEM_BASES (0x6000) |