[PATCH v2 1/2] drm/amdkfd: cleanup device pointer dereference chains

[Yunxiang Li]

Pull out some duplicated dereference chains into variables, and in some
cases grab struct device pointer directly from amdgpu_device instead of
via drm_device.

Signed-off-by: Yunxiang Li <Yunxiang.Li at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_process.c | 29 ++++++++++++------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index d665ecdcd12fc..c9ce95bc3ec8e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1051,6 +1051,7 @@ static void kfd_process_destroy_pdds(struct kfd_process *p)
 
 	for (i = 0; i < p->n_pdds; i++) {
 		struct kfd_process_device *pdd = p->pdds[i];
+		struct amdgpu_device *adev = pdd->dev->adev;
 
 		pr_debug("Releasing pdd (topology id %d) for process (pasid 0x%x)\n",
 				pdd->dev->id, p->pasid);
@@ -1059,8 +1060,8 @@ static void kfd_process_destroy_pdds(struct kfd_process *p)
 		kfd_process_device_destroy_ib_mem(pdd);
 
 		if (pdd->drm_file) {
-			amdgpu_amdkfd_gpuvm_release_process_vm(
-					pdd->dev->adev, pdd->drm_priv);
+			amdgpu_amdkfd_gpuvm_release_process_vm(adev,
+							       pdd->drm_priv);
 			fput(pdd->drm_file);
 		}
 
@@ -1073,15 +1074,14 @@ static void kfd_process_destroy_pdds(struct kfd_process *p)
 		kfd_free_process_doorbells(pdd->dev->kfd, pdd);
 
 		if (pdd->dev->kfd->shared_resources.enable_mes)
-			amdgpu_amdkfd_free_gtt_mem(pdd->dev->adev,
-						   &pdd->proc_ctx_bo);
+			amdgpu_amdkfd_free_gtt_mem(adev, &pdd->proc_ctx_bo);
 		/*
 		 * before destroying pdd, make sure to report availability
 		 * for auto suspend
 		 */
 		if (pdd->runtime_inuse) {
-			pm_runtime_mark_last_busy(adev_to_drm(pdd->dev->adev)->dev);
-			pm_runtime_put_autosuspend(adev_to_drm(pdd->dev->adev)->dev);
+			pm_runtime_mark_last_busy(adev->dev);
+			pm_runtime_put_autosuspend(adev->dev);
 			pdd->runtime_inuse = false;
 		}
 
@@ -1606,6 +1606,8 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_node *dev,
 							struct kfd_process *p)
 {
 	struct kfd_process_device *pdd = NULL;
+	struct amdgpu_device *adev = dev->adev;
+	struct device *bdev = adev->dev;
 	int retval = 0;
 
 	if (WARN_ON_ONCE(p->n_pdds >= MAX_GPU_INSTANCE))
@@ -1631,14 +1633,14 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_node *dev,
 	atomic64_set(&pdd->evict_duration_counter, 0);
 
 	if (dev->kfd->shared_resources.enable_mes) {
-		retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev,
+		retval = amdgpu_amdkfd_alloc_gtt_mem(adev,
 						AMDGPU_MES_PROC_CTX_SIZE,
 						&pdd->proc_ctx_bo,
 						&pdd->proc_ctx_gpu_addr,
 						&pdd->proc_ctx_cpu_ptr,
 						false);
 		if (retval) {
-			dev_err(dev->adev->dev,
+			dev_err(bdev,
 				"failed to allocate process context bo\n");
 			goto err_free_pdd;
 		}
@@ -1647,10 +1649,8 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_node *dev,
 
 	p->pdds[p->n_pdds++] = pdd;
 	if (kfd_dbg_is_per_vmid_supported(pdd->dev))
-		pdd->spi_dbg_override = pdd->dev->kfd2kgd->disable_debug_trap(
-							pdd->dev->adev,
-							false,
-							0);
+		pdd->spi_dbg_override =
+			pdd->dev->kfd2kgd->disable_debug_trap(adev, false, 0);
 
 	/* Init idr used for memory handle translation */
 	idr_init(&pdd->alloc_idr);
@@ -1750,11 +1750,12 @@ struct kfd_process_device *kfd_bind_process_to_device(struct kfd_node *dev,
 							struct kfd_process *p)
 {
 	struct kfd_process_device *pdd;
+	struct device *bdev = dev->adev->dev;
 	int err;
 
 	pdd = kfd_get_process_device_data(dev, p);
 	if (!pdd) {
-		dev_err(dev->adev->dev, "Process device data doesn't exist\n");
+		dev_err(bdev, "Process device data doesn't exist\n");
 		return ERR_PTR(-ENOMEM);
 	}
 
@@ -1767,7 +1768,7 @@ struct kfd_process_device *kfd_bind_process_to_device(struct kfd_node *dev,
 	 * pdd is destroyed.
 	 */
 	if (!pdd->runtime_inuse) {
-		err = pm_runtime_get_sync(adev_to_drm(dev->adev)->dev);
+		err = pm_runtime_get_sync(bdev);
 		if (err < 0) {
 			pm_runtime_put_autosuspend(adev_to_drm(dev->adev)->dev);
 			return ERR_PTR(err);
-- 
2.34.1