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drm/amd/amdgpu: add mutex in check_soft for VCE v3 

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>
This commit is contained in:
Tom St Denis 2016-08-11 09:55:51 -04:00 committed by Alex Deucher
parent f3f0ea9536
commit 9aeb774c1e
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
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@ -569,6 +569,7 @@ static int vce_v3_0_check_soft_reset(void *handle)
*
* VCE team suggest use bit 3--bit 6 for busy status check
*/
mutex_lock(&adev->grbm_idx_mutex);
WREG32_FIELD(GRBM_GFX_INDEX, INSTANCE_INDEX, 0);
if (RREG32(mmVCE_STATUS) & AMDGPU_VCE_STATUS_BUSY_MASK) {
srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_VCE0, 1);
@ -588,6 +589,7 @@ static int vce_v3_0_check_soft_reset(void *handle)
adev->ip_block_status[AMD_IP_BLOCK_TYPE_VCE].hang = false;
adev->vce.srbm_soft_reset = 0;
}
mutex_unlock(&adev->grbm_idx_mutex);
return 0;
}