This code is not performance critical.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 26 ++++----------------------
1 file changed, 4 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 7dee74f1937c..ff5e5f69b403 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -350,35 +350,17 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
*adev,
}
spin_lock(&adev->gmc.invalidate_lock);
-
WREG32_NO_KIQ(hub->vm_inv_eng0_req + eng, tmp);
-
- /* Busy wait for ACK.*/
- for (j = 0; j < 100; j++) {
- tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_ack + eng);
- tmp &= 1 << vmid;
- if (tmp)
- break;
- cpu_relax();
- }
- if (j < 100) {
- spin_unlock(&adev->gmc.invalidate_lock);
- continue;
- }
-
- /* Wait for ACK with a delay.*/
for (j = 0; j < adev->usec_timeout; j++) {
tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_ack + eng);
- tmp &= 1 << vmid;
- if (tmp)
+ if (tmp & (1 << vmid))
break;
udelay(1);
}
- if (j < adev->usec_timeout) {
- spin_unlock(&adev->gmc.invalidate_lock);
- continue;
- }
spin_unlock(&adev->gmc.invalidate_lock);
+ if (j < adev->usec_timeout)
+ continue;
+
DRM_ERROR("Timeout waiting for VM flush ACK!\n");
}
}
--
2.14.1
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