Commit d55957fb authored by Yifan Zhang's avatar Yifan Zhang Committed by Alex Deucher
Browse files

drm/amdkfd: bail out early if no get_atc_vmid_pasid_mapping_info 



it makes no sense to continue with an undefined vmid.

Fixes: c8b0507f ("drm/amdkfd: judge get_atc_vmid_pasid_mapping_info before call")
Signed-off-by: default avatarYifan Zhang <yifan1.zhang@amd.com>
Reported-by: default avatarNathan Chancellor <nathan@kernel.org>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 53b97af4

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

+12 −9
Original line number Diff line number Diff line
@@ -500,12 +500,16 @@ static int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process 


	pr_debug("Killing all process wavefronts\n");



	if (!dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {

		pr_err("no vmid pasid mapping supported \n");

		return -EOPNOTSUPP;

	}



	/* Scan all registers in the range ATC_VMID8_PASID_MAPPING ..

	 * ATC_VMID15_PASID_MAPPING

	 * to check which VMID the current process is mapped to.

	 */



	if (dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {

	for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) {

		status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info

				(dev->adev, vmid, &queried_pasid);
@@ -516,7 +520,6 @@ static int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process 
			break;

		}

	}

	}



	if (vmid > last_vmid_to_scan) {

		pr_err("Didn't find vmid for pasid 0x%x\n", p->pasid);