From: Yifan Zhang Date: Wed, 9 Mar 2022 01:59:19 +0000 (+0800) Subject: drm/amdkfd: bail out early if no get_atc_vmid_pasid_mapping_info X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d55957fb299b74829c438f77fe29896e3aed39fc;p=linux.git drm/amdkfd: bail out early if no get_atc_vmid_pasid_mapping_info it makes no sense to continue with an undefined vmid. Fixes: c8b0507f40deea ("drm/amdkfd: judge get_atc_vmid_pasid_mapping_info before call") Signed-off-by: Yifan Zhang Reported-by: Nathan Chancellor Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index 77364afdc6064..acf4f79758501 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -500,21 +500,24 @@ 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); + 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); - if (status && queried_pasid == p->pasid) { - pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n", - vmid, p->pasid); - break; - } + if (status && queried_pasid == p->pasid) { + pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n", + vmid, p->pasid); + break; } }