1 files changed, 41 insertions, 0 deletions

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index f7c8a399978c..5fe75026ecc2 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -22,6 +22,7 @@ unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
 
 unsigned int pci_early_dump_regs;
 static int pci_bf_sort;
+static int smbios_type_b1_flag;
 int pci_routeirq;
 int noioapicquirk;
 #ifdef CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS
@@ -185,6 +186,39 @@ static int __devinit set_bf_sort(const struct dmi_system_id *d)
         return 0;
 }
 
+static void __devinit read_dmi_type_b1(const struct dmi_header *dm,
+                                       void *private_data)
+{
+        u8 *d = (u8 *)dm + 4;
+
+        if (dm->type != 0xB1)
+                return;
+        switch (((*(u32 *)d) >> 9) & 0x03) {
+        case 0x00:
+                printk(KERN_INFO "dmi type 0xB1 record - unknown flag\n");
+                break;
+        case 0x01: /* set pci=bfsort */
+                smbios_type_b1_flag = 1;
+                break;
+        case 0x02: /* do not set pci=bfsort */
+                smbios_type_b1_flag = 2;
+                break;
+        default:
+                break;
+        }
+}
+
+static int __devinit find_sort_method(const struct dmi_system_id *d)
+{
+        dmi_walk(read_dmi_type_b1, NULL);
+
+        if (smbios_type_b1_flag == 1) {
+                set_bf_sort(d);
+                return 0;
+        }
+        return -1;
+}
+
 /*
  * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
  */
@@ -213,6 +247,13 @@ static const struct dmi_system_id __devinitconst pciprobe_dmi_table[] = {
         },
 #endif          /* __i386__ */
         {
+                .callback = find_sort_method,
+                .ident = "Dell System",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
+                },
+        },
+        {
                 .callback = set_bf_sort,
                 .ident = "Dell PowerEdge 1950",
                 .matches = {