1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 90877565caa3..1051702c8d4f 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -168,7 +168,7 @@ static void __devinit quirk_uli1575(struct pci_dev *dev)
 {
         unsigned short temp;
         struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        unsigned char irq2pin[16];
+        unsigned char irq2pin[16], c;
         unsigned long pirq_map_word = 0;
         u32 irq;
         int i;
@@ -288,6 +288,11 @@ static void __devinit quirk_uli1575(struct pci_dev *dev)
         outb(0x1e, 0x4d1);
 
 #undef ULI1575_SET_DEV_IRQ
+
+        /* Disable the HD interface and enable the AC97 interface. */
+        pci_read_config_byte(dev, 0xb8, &c);
+        c &= 0x7f;
+        pci_write_config_byte(dev, 0xb8, c);
 }
 
 static void __devinit quirk_uli5288(struct pci_dev *dev)