From: Wei Wang2 <wei.wang2@amd.com>
To: keir.fraser@eu.citrix.com
Cc: xen-devel@lists.xensource.com
Subject: [PATCH]AMD IOV: Fix xen start up bug on non-iommu machine
Date: Mon, 21 Apr 2008 15:20:16 +0200 [thread overview]
Message-ID: <1208784016.31043.19.camel@gran.amd.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 541 bytes --]
Keir,
This patch fixes a Xen start up bug on non-iommu machine.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
--
AMD Saxony, Dresden, Germany
Operating System Research Center
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vertretungsberechtigter Komplementär:
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Geschäftsführer der AMD Saxony LLC:
Dr. Hans-R. Deppe, Thomas McCoy
[-- Attachment #2: fix_bug.patch --]
[-- Type: text/x-patch, Size: 689 bytes --]
diff -r 491074885dcb xen/drivers/passthrough/amd/iommu_detect.c
--- a/xen/drivers/passthrough/amd/iommu_detect.c Mon Apr 21 12:23:55 2008 +0100
+++ b/xen/drivers/passthrough/amd/iommu_detect.c Mon Apr 21 15:07:03 2008 +0200
@@ -220,9 +220,8 @@ static int __init scan_functions_for_iom
func = 0;
count = 1;
- while ( VALID_PCI_VENDOR_ID(pci_conf_read16(bus, dev, func,
- PCI_VENDOR_ID)) &&
- !error && (func < count) )
+ while ( (func < count) && !error &&
+ VALID_PCI_VENDOR_ID(pci_conf_read16(bus, dev, func, PCI_VENDOR_ID)) )
{
hdr_type = pci_conf_read8(bus, dev, func, PCI_HEADER_TYPE);
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