From 4c5a564bf968b5a440a28e40d09d90d33e600513 Mon Sep 17 00:00:00 2001
From: Philip Yang <Philip.Yang@amd.com>
Date: Fri, 17 Sep 2021 14:32:14 -0400
Subject: [PATCH] drm/amdkfd: handle svm migrate init error
Git-commit: 7d6687200a939176847090bbde5cb79a82792a2f
Patch-mainline: v5.15-rc3
References: stable-5.14.11
[ Upstream commit 7d6687200a939176847090bbde5cb79a82792a2f ]
If svm migration init failed to create pgmap for device memory, set
pgmap type to 0 to disable device SVM support capability.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index dab290a4d19d..165e0ebb619d 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -894,6 +894,9 @@ int svm_migrate_init(struct amdgpu_device *adev)
r = devm_memremap_pages(adev->dev, pgmap);
if (IS_ERR(r)) {
pr_err("failed to register HMM device memory\n");
+
+ /* Disable SVM support capability */
+ pgmap->type = 0;
devm_release_mem_region(adev->dev, res->start,
res->end - res->start + 1);
return PTR_ERR(r);
--
2.26.2