[PATCH] drm/amdkfd: Initialize dqm earlier

Zeng, Oak Oak.Zeng at amd.com
Thu Jun 6 21:51:32 UTC 2019


dqm is referenced in function kfd_toplogy_add_device.
Move dqm initialization up to avoid NULL pointer reference.

Change-Id: Id6cb2541af129826b7621ceaa8e06e638c7bb122
Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 9d1b026..e7e24fe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -603,6 +603,12 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 	if (kfd->kfd2kgd->get_hive_id)
 		kfd->hive_id = kfd->kfd2kgd->get_hive_id(kfd->kgd);
 
+	kfd->dqm = device_queue_manager_init(kfd);
+	if (!kfd->dqm) {
+		dev_err(kfd_device, "Error initializing queue manager\n");
+		goto device_queue_manager_error;
+	}
+
 	if (kfd_topology_add_device(kfd)) {
 		dev_err(kfd_device, "Error adding device to topology\n");
 		goto kfd_topology_add_device_error;
@@ -613,12 +619,6 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 		goto kfd_interrupt_error;
 	}
 
-	kfd->dqm = device_queue_manager_init(kfd);
-	if (!kfd->dqm) {
-		dev_err(kfd_device, "Error initializing queue manager\n");
-		goto device_queue_manager_error;
-	}
-
 	if (kfd_iommu_device_init(kfd)) {
 		dev_err(kfd_device, "Error initializing iommuv2\n");
 		goto device_iommu_error;
@@ -642,12 +642,12 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 
 kfd_resume_error:
 device_iommu_error:
-	device_queue_manager_uninit(kfd->dqm);
-device_queue_manager_error:
 	kfd_interrupt_exit(kfd);
 kfd_interrupt_error:
 	kfd_topology_remove_device(kfd);
 kfd_topology_add_device_error:
+	device_queue_manager_uninit(kfd->dqm);
+device_queue_manager_error:
 	kfd_doorbell_fini(kfd);
 kfd_doorbell_error:
 	kfd_gtt_sa_fini(kfd);
-- 
2.7.4



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