drm/amdgpu: check if we need to reset at init time (v2) (95e8e59e) · Commits · 戴 / test

To deal with situations like kexec or GPU VM passthrough where the device may have been used previously without a proper GPU reset between. v2: rebase bug: https://bugs.freedesktop.org/show_bug.cgi?id=108585 bug: https://bugs.freedesktop.org/show_bug.cgi?id=108754 Reviewed-by:

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

+11 −0

Original line number	Diff line number	Diff line
		@@ -2550,6 +2550,17 @@ int amdgpu_device_init(struct amdgpu_device *adev,
		/* detect if we are with an SRIOV vbios */
		amdgpu_device_detect_sriov_bios(adev);

		/* check if we need to reset the asic
		* E.g., driver was not cleanly unloaded previously, etc.
		*/
		if (amdgpu_asic_need_reset_on_init(adev)) {
		r = amdgpu_asic_reset(adev);
		if (r) {
		dev_err(adev->dev, "asic reset on init failed\n");
		goto failed;
		}
		}

		/* Post card if necessary */
		if (amdgpu_device_need_post(adev)) {
		if (!adev->bios) {