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From 541e8d409c49814fb6f9d768a0cd4a0f0a0ae986 Mon Sep 17 00:00:00 2001
From: Oak Zeng <Oak.Zeng@amd.com>
Date: Mon, 10 Jun 2019 14:44:07 -0500
Subject: [PATCH 2790/2940] drm/amdkfd: Add device to topology after it is
completely inited
We can't have devices that are not completely initialized in kfd topology.
Otherwise it is a race condition when user access not completely
initialized device. This also addresses a kfd_topology_add_device accessing
NULL dqm pointer issue.
Change-Id: I53a0fe498e6daaeb63aa8d78362df01955f14a2f
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 21ccaeea89d8..27467ac3be5f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -605,11 +605,6 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
if (kfd->kfd2kgd->get_hive_id)
kfd->hive_id = kfd->kfd2kgd->get_hive_id(kfd->kgd);
- if (kfd_topology_add_device(kfd)) {
- dev_err(kfd_device, "Error adding device to topology\n");
- goto kfd_topology_add_device_error;
- }
-
if (kfd_interrupt_init(kfd)) {
dev_err(kfd_device, "Error initializing interrupts\n");
goto kfd_interrupt_error;
@@ -633,6 +628,11 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
kfd->dbgmgr = NULL;
+ if (kfd_topology_add_device(kfd)) {
+ dev_err(kfd_device, "Error adding device to topology\n");
+ goto kfd_topology_add_device_error;
+ }
+
kfd->init_complete = true;
dev_info(kfd_device, "added device %x:%x\n", kfd->pdev->vendor,
kfd->pdev->device);
@@ -642,14 +642,13 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
goto out;
+kfd_topology_add_device_error:
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:
kfd_doorbell_fini(kfd);
kfd_doorbell_error:
kfd_gtt_sa_fini(kfd);
--
2.17.1
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