iommu/amd: Fix interrupt remapping for aliased devices

An apparent cut and paste error prevents the correct flags from being
set on the alias device resulting in MSI on conventional PCI devices
failing to work.  This also produces error events from the IOMMU like:

AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:14.4 address=0x000000fdf8000000 flags=0x0a00]

Where 14.4 is a PCIe-to-PCI bridge with a device behind it trying to
use MSI interrupts.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <joro@8bytes.org>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index c949520bd196ec47cf6e572e68cdd67c11b9f84f..57068e8035b5b2553141cb8f1a6ad27f334ea6ec 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3999,7 +3999,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic)
        iommu_flush_dte(iommu, devid);
        if (devid != alias) {
                irq_lookup_table[alias] = table;
-               set_dte_irq_entry(devid, table);
+               set_dte_irq_entry(alias, table);
                iommu_flush_dte(iommu, alias);
        }