From: Keir Fraser <keir@xen.org>
Date: Fri, 29 Oct 2010 17:06:17 +0000 (+0100)
Subject: VT-d: only scan secondary functions on multi-function devices
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~11306
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=ddeda0449fdb3b17fd9950680dda190e580fb419;p=xen.git

VT-d: only scan secondary functions on multi-function devices

Signed-off-by: Jan Beulich <jbeulich@novell.com>
---

diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index d6d833142b..0a159804f1 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -445,6 +445,10 @@ int __init scan_pci_devices(void)
                         spin_unlock(&pcidevs_lock);
                         return -EINVAL;
                 }
+
+                if ( !func && !(pci_conf_read8(bus, dev, func,
+                                               PCI_HEADER_TYPE) & 0x80) )
+                    break;
             }
         }
     }