1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e159d6604494..0eeac60042b3 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -679,6 +679,33 @@ static int pci_setup_device(struct pci_dev * dev)
                 pci_read_bases(dev, 6, PCI_ROM_ADDRESS);
                 pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &dev->subsystem_vendor);
                 pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &dev->subsystem_device);
+
+                /*
+                 *      Do the ugly legacy mode stuff here rather than broken chip
+                 *      quirk code. Legacy mode ATA controllers have fixed
+                 *      addresses. These are not always echoed in BAR0-3, and
+                 *      BAR0-3 in a few cases contain junk!
+                 */
+                if (class == PCI_CLASS_STORAGE_IDE) {
+                        u8 progif;
+                        pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
+                        if ((progif & 1) == 0) {
+                                dev->resource[0].start = 0x1F0;
+                                dev->resource[0].end = 0x1F7;
+                                dev->resource[0].flags = IORESOURCE_IO;
+                                dev->resource[1].start = 0x3F6;
+                                dev->resource[1].end = 0x3F6;
+                                dev->resource[1].flags = IORESOURCE_IO;
+                        }
+                        if ((progif & 4) == 0) {
+                                dev->resource[2].start = 0x170;
+                                dev->resource[2].end = 0x177;
+                                dev->resource[2].flags = IORESOURCE_IO;
+                                dev->resource[3].start = 0x376;
+                                dev->resource[3].end = 0x376;
+                                dev->resource[3].flags = IORESOURCE_IO;
+                        }
+                }
                 break;
 
         case PCI_HEADER_TYPE_BRIDGE:                /* bridge header */