From 57ff151880cced48d72bcf4d5334864e6a4bc0a7 Mon Sep 17 00:00:00 2001 From: Tom St Denis Date: Mon, 8 Feb 2016 12:34:19 -0500 Subject: [PATCH 0297/1110] 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 Reviewed-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 9 ++------- 1 file 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 adaa3f8..940dc0b 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; -- 2.7.4