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drm/amdgpu: add zero timeout check in amdgpu_fence_wait_seq_timeout 

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
hifive-unleashed-5.1
Jack Xiao 2015-06-04 12:18:27 +08:00 committed by Alex Deucher
parent ae45577324
commit 25f45e6338
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
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@ -522,6 +522,10 @@ long amdgpu_fence_wait_seq_timeout(struct amdgpu_device *adev, u64 *target_seq,
bool signaled;
int i, r;
if (timeout == 0) {
return amdgpu_fence_any_seq_signaled(adev, target_seq);
}
while (!amdgpu_fence_any_seq_signaled(adev, target_seq)) {
/* Save current sequence values, used to check for GPU lockups */