FAILED: patch "[PATCH] drm/amdgpu: Don't resume IOMMU after incomplete init" failed to apply to 6.2-stable tree

The patch below does not apply to the 6.2-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.2.y
git checkout FETCH_HEAD
git cherry-pick -x 7ee938ac006096fe9c3f1075f56b9263587c150f
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2023051343-header-connected-1fbb@gregkh' --subject-prefix 'PATCH 6.2.y' HEAD^..

Possible dependencies:

7ee938ac0060 ("drm/amdgpu: Don't resume IOMMU after incomplete init")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 7ee938ac006096fe9c3f1075f56b9263587c150f Mon Sep 17 00:00:00 2001
From: Felix Kuehling <[email protected]>
Date: Mon, 13 Mar 2023 20:03:08 -0400
Subject: [PATCH] drm/amdgpu: Don't resume IOMMU after incomplete init

Check kfd->init_complete in kgd2kfd_iommu_resume, consistent with other kgd2kfd calls. This should fix IOMMU errors on resume from suspend when KFD IOMMU initialization failed.

index 3de7f616a001..ec70a1658dc3 100644
@@ -59,6 +59,7 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
 				unsigned int chunk_size);
 static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
 
+static int kfd_resume_iommu(struct kfd_dev *kfd);
 static int kfd_resume(struct kfd_dev *kfd);
 
 static void kfd_device_info_set_sdma_info(struct kfd_dev *kfd)

@@ -624,7 +625,7 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 
 	svm_migrate_init(kfd->adev);
 
-	if (kgd2kfd_resume_iommu(kfd))
+	if (kfd_resume_iommu(kfd))
 		goto device_iommu_error;
 
 	if (kfd_resume(kfd))

@@ -772,6 +773,14 @@ int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
 }
 
 int kgd2kfd_resume_iommu(struct kfd_dev *kfd)
+{
+	if (!kfd->init_complete)
+		return 0;
+
+	return kfd_resume_iommu(kfd);
+}
+
+static int kfd_resume_iommu(struct kfd_dev *kfd)
 {
 	int err = 0;