drm/amdgpu: Use the default reset when loading or reloading the driver

[ Upstream commit 4eea7fb ]

Below call trace and errors are observed when reloading
amdgpu driver with the module parameter reset_method=3.

It should do a default reset when loading or reloading the
driver, regardless of the module parameter reset_method.

v2: add comments inside and modify commit messages.

[  +2.180243] [drm] psp gfx command ID_LOAD_TOC(0x20) failed
and response status is (0x0)
[  +0.000011] [drm:psp_hw_start [amdgpu]] *ERROR* Failed to load toc
[  +0.000890] [drm:psp_hw_start [amdgpu]] *ERROR* PSP tmr init failed!
[  +0.020683] [drm:amdgpu_fill_buffer [amdgpu]] *ERROR* Trying to
clear memory with ring turned off.
[  +0.000003] RIP: 0010:amdgpu_bo_release_notify+0x1ef/0x210 [amdgpu]
[  +0.000004] Call Trace:
[  +0.000003]  <TASK>
[  +0.000008]  ttm_bo_release+0x2c4/0x330 [amdttm]
[  +0.000026]  amdttm_bo_put+0x3c/0x70 [amdttm]
[  +0.000020]  amdgpu_bo_free_kernel+0xe6/0x140 [amdgpu]
[  +0.000728]  psp_v11_0_ring_destroy+0x34/0x60 [amdgpu]
[  +0.000826]  psp_hw_init+0xe7/0x2f0 [amdgpu]
[  +0.000813]  amdgpu_device_fw_loading+0x1ad/0x2d0 [amdgpu]
[  +0.000731]  amdgpu_device_init.cold+0x108e/0x2002 [amdgpu]
[  +0.001071]  ? do_pci_enable_device+0xe1/0x110
[  +0.000011]  amdgpu_driver_load_kms+0x1a/0x160 [amdgpu]
[  +0.000729]  amdgpu_pci_probe+0x179/0x3a0 [amdgpu]

Signed-off-by: lyndonli <[email protected]>
Signed-off-by: Yunxiang Li <[email protected]>
Reviewed-by: Feifei Xu <[email protected]>
Reviewed-by: Kenneth Feng <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: lyndonli

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -3558,6 +3558,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	int r, i;
 	bool px = false;
 	u32 max_MBps;
+	int tmp;
 
 	adev->shutdown = false;
 	adev->flags = flags;
@@ -3779,7 +3780,13 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 				}
 			}
 		} else {
+			tmp = amdgpu_reset_method;
+			/* It should do a default reset when loading or reloading the driver,
+			 * regardless of the module parameter reset_method.
+			 */
+			amdgpu_reset_method = AMD_RESET_METHOD_NONE;
 			r = amdgpu_asic_reset(adev);
+			amdgpu_reset_method = tmp;
 			if (r) {
 				dev_err(adev->dev, "asic reset on init failed\n");
 				goto failed;