Disable unused list

diff --git a/bus/usb/ohci.c b/bus/usb/ohci.c
index 4d66df0bcf9657ccbe8dd6ce899309ba8eb2678d..fd378cc8d0ee63389420fa5179fde0c3bbf20584 100644 (file)
--- a/bus/usb/ohci.c
+++ b/bus/usb/ohci.c
@@ -563,9 +563,14 @@ grub_ohci_transfer (grub_usb_controller_t dev,
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_BULKHEAD, ed_addr);
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_BULKCURR, 0);
 
+#define GRUB_OHCI_REG_CONTROL_BULK_ENABLE (1 << 5)
+#define GRUB_OHCI_REG_CONTROL_CONTROL_ENABLE (1 << 4)
+
        /* Enable the Bulk list.  */
        control = grub_ohci_readreg32 (o, GRUB_OHCI_REG_CONTROL);
-       control |= 1 << 5;
+       control |= GRUB_OHCI_REG_CONTROL_BULK_ENABLE;
+       control &= ~GRUB_OHCI_REG_CONTROL_CONTROL_ENABLE;
+
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_CONTROL, control);
 
        /* Set BulkListFilled.  */
@@ -578,12 +583,15 @@ grub_ohci_transfer (grub_usb_controller_t dev,
 
     case GRUB_USB_TRANSACTION_TYPE_CONTROL:
       {
+       grub_dprintf ("ohci", "add to control list\n");
+
        /* Set ControlList Head and Current */
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_CONTROLHEAD, ed_addr);
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_CONTROLCURR, 0);
 
        /* Enable the Control list.  */
-       control |= 1 << 4;
+       control |= GRUB_OHCI_REG_CONTROL_CONTROL_ENABLE;
+       control &= ~GRUB_OHCI_REG_CONTROL_BULK_ENABLE;
        grub_ohci_writereg32 (o, GRUB_OHCI_REG_CONTROL, control);
 
        /* Set ControlListFilled.  */