From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 9 Jun 2009 08:54:18 +0000 (+0200)
Subject: amd-iommu: remove BUS_NOTIFY_BOUND_DRIVER handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=29150078d7a1758df8c7a6cd2ec066ac65e1fab9;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 8510e90ebfec..81872604eb76 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -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;