drm/amdgpu: Don't use kiq in gpu reset

When in gpu reset, don't use kiq, it will generate more TDR.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index b6b5ede0ca35..6763570c0321 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -332,15 +332,8 @@ signed long  amdgpu_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 
         r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 
-        /* don't wait anymore for gpu reset case because this way may
-         * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
-         * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
-         * never return if we keep waiting in virt_kiq_rreg, which cause
-         * gpu_recover() hang there.
-         *
-         * also don't wait anymore for IRQ context
-         * */
-        if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
+        /* don't wait anymore for IRQ context */
+        if (r < 1 && in_interrupt())
                 goto failed_kiq;
 
         might_sleep();
@@ -388,8 +381,8 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
                 u32 tmp = gmc_v9_0_get_invalidate_req(vmid);
 
                 if (adev->gfx.kiq.ring.ready &&
-                    (amdgpu_sriov_runtime(adev) ||
-                     !amdgpu_sriov_vf(adev))) {
+                    (amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
+                    !adev->in_gpu_reset) {
                         r = amdgpu_kiq_reg_write_reg_wait(adev, hub->vm_inv_eng0_req + eng,
                                 hub->vm_inv_eng0_ack + eng, tmp, 1 << vmid);
                         if (!r)