1 files changed, 23 insertions, 2 deletions

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 192397c98606..49e5195223db 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -22,6 +22,7 @@ struct pci_root_info {
 };
 
 static bool pci_use_crs = true;
+static bool pci_ignore_seg = false;
 
 static int __init set_use_crs(const struct dmi_system_id *id)
 {
@@ -35,7 +36,14 @@ static int __init set_nouse_crs(const struct dmi_system_id *id)
         return 0;
 }
 
-static const struct dmi_system_id pci_use_crs_table[] __initconst = {
+static int __init set_ignore_seg(const struct dmi_system_id *id)
+{
+        printk(KERN_INFO "PCI: %s detected: ignoring ACPI _SEG\n", id->ident);
+        pci_ignore_seg = true;
+        return 0;
+}
+
+static const struct dmi_system_id pci_crs_quirks[] __initconst = {
         /* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
         {
                 .callback = set_use_crs,
@@ -98,6 +106,16 @@ static const struct dmi_system_id pci_use_crs_table[] __initconst = {
                         DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
                 },
         },
+
+        /* https://bugzilla.kernel.org/show_bug.cgi?id=15362 */
+        {
+                .callback = set_ignore_seg,
+                .ident = "HP xw9300",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "HP xw9300 Workstation"),
+                },
+        },
         {}
 };
 
@@ -108,7 +126,7 @@ void __init pci_acpi_crs_quirks(void)
         if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
                 pci_use_crs = false;
 
-        dmi_check_system(pci_use_crs_table);
+        dmi_check_system(pci_crs_quirks);
 
         /*
          * If the user specifies "pci=use_crs" or "pci=nocrs" explicitly, that
@@ -455,6 +473,9 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
         int pxm;
 #endif
 
+        if (pci_ignore_seg)
+                domain = 0;
+
         if (domain && !pci_domains_supported) {
                 printk(KERN_WARNING "pci_bus %04x:%02x: "
                        "ignored (multiple domains not supported)\n",