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drm/amd/amdgpu: Remove double lock from gfx v6 

The function gfx_v6_0_get_cu_info() was taking the
grbm_idx_mutex which was then taken by a dependent
function gfx_v6_0_get_cu_active_bitmap().

This patch removes the select from the parent function
to avoid the double lock.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
steinar/wifi_calib_4_9_kernel
Tom St Denis 2016-09-07 08:03:28 -04:00 committed by Alex Deucher
parent 075719c3cb
commit f166d9f297
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
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@ -3193,13 +3193,11 @@ static void gfx_v6_0_get_cu_info(struct amdgpu_device *adev)
memset(cu_info, 0, sizeof(*cu_info));
mutex_lock(&adev->grbm_idx_mutex);
for (i = 0; i < adev->gfx.config.max_shader_engines; i++) {
for (j = 0; j < adev->gfx.config.max_sh_per_se; j++) {
mask = 1;
ao_bitmap = 0;
counter = 0;
gfx_v6_0_select_se_sh(adev, i, j, 0xffffffff);
bitmap = gfx_v6_0_get_cu_active_bitmap(adev, i, j);
cu_info->bitmap[i][j] = bitmap;
@ -3215,8 +3213,6 @@ static void gfx_v6_0_get_cu_info(struct amdgpu_device *adev)
ao_cu_mask |= (ao_bitmap << (i * 16 + j * 8));
}
}
gfx_v6_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff);
mutex_unlock(&adev->grbm_idx_mutex);
cu_info->number = active_cu_number;
cu_info->ao_cu_mask = ao_cu_mask;