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Commit 29150078 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

amd-iommu: remove BUS_NOTIFY_BOUND_DRIVER handling 



Handling this event causes device assignment in KVM to fail because the
device gets re-attached as soon as the pci-stub registers as the driver
for the device.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent d2dd01de

arch/x86/kernel/amd_iommu.c

+0 −11
Original line number Diff line number Diff line
@@ -1145,17 +1145,6 @@ static int device_change_notifier(struct notifier_block *nb, 
			  "to a non-dma-ops domain\n", dev_name(dev));



	switch (action) {

	case BUS_NOTIFY_BOUND_DRIVER:

		if (domain)

			goto out;

		dma_domain = find_protection_domain(devid);

		if (!dma_domain)

			dma_domain = iommu->default_dom;

		attach_device(iommu, &dma_domain->domain, devid);

		DUMP_printk(KERN_INFO "AMD IOMMU: Using protection domain "

			    "%d for device %s\n",

			    dma_domain->domain.id, dev_name(dev));

		break;

	case BUS_NOTIFY_UNBOUND_DRIVER:

		if (!domain)

			goto out;