diff options
author | Tom St Denis <tom.stdenis@amd.com> | 2016-02-08 17:34:19 (GMT) |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2016-02-12 20:29:47 (GMT) |
commit | 6d1d6831814418b1348db83c1d90042a3b017efe (patch) | |
tree | 00e11807f676489ba458c3910aee392952193712 /drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | |
parent | d3a7207bdbf5daeee962b376b807cab6778d0cbc (diff) | |
download | linux-6d1d6831814418b1348db83c1d90042a3b017efe.tar.xz |
drm/amdgpu/gfx7: LOC reduction in gfx_v7_0_setup_rb
Reduce for loop with bitmask to simple complement and mask
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index 5e858ca..3aaa0f9 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -1648,7 +1648,7 @@ static void gfx_v7_0_setup_rb(struct amdgpu_device *adev, u32 max_rb_num_per_se) { int i, j; - u32 data, mask; + u32 data; u32 disabled_rbs = 0; u32 enabled_rbs = 0; @@ -1666,12 +1666,7 @@ static void gfx_v7_0_setup_rb(struct amdgpu_device *adev, gfx_v7_0_select_se_sh(adev, 0xffffffff, 0xffffffff); mutex_unlock(&adev->grbm_idx_mutex); - mask = 1; - for (i = 0; i < max_rb_num_per_se * se_num; i++) { - if (!(disabled_rbs & mask)) - enabled_rbs |= mask; - mask <<= 1; - } + enabled_rbs = (~disabled_rbs) & ((1UL<<(max_rb_num_per_se*se_num))-1); adev->gfx.config.backend_enable_mask = enabled_rbs; |