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drm/amdgpu/gfx7: LOC reduction in gfx_v7_0_setup_rb

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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>
This commit is contained in:
Tom St Denis 2016-02-08 12:34:19 -05:00 committed by Alex Deucher
parent d3a7207bdb
commit 6d1d683181
1 changed files with 2 additions and 7 deletions
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9
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
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@ -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;