drm/amdgpu: Adjust usleep_range in fence wait

Tune the sleep interval in the PSP fence wait loop from 10-100us to
60-100us.This adjustment results in an overall wait window of 1.2s
(60us * 20000 iterations) to 2 seconds (100us * 20000 iterations),
which guarantees that we can retrieve the correct fence value

Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index b0540b0..5eeea96 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -735,7 +735,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
                ras_intr = amdgpu_ras_intr_triggered();
                if (ras_intr)
                        break;
-               usleep_range(10, 100);
+               usleep_range(60, 100);
                amdgpu_device_invalidate_hdp(psp->adev, NULL);
        }