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USB EHCI: SMI disabled in all cases

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starous@volny.cz committed 2013-09-23 20:30:52 +02:00
1 parent 890bdabe96
commit 7c680e1f17
2 files changed
+13 -13
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grub-core/bus/usb/ehci.c
+8 -12
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@@ -716,7 +716,7 @@ grub_ehci_pci_iter (grub_pci_device_t dev, grub_pci_id_t pciid,
usblegsup = grub_pci_read (pciaddr_eecp);
if (usblegsup & GRUB_EHCI_BIOS_OWNED)
{
grub_boot_time ("Taking ownership of EHCI port");
grub_boot_time ("Taking ownership of EHCI controller");
grub_dprintf ("ehci",
"EHCI grub_ehci_pci_iter: EHCI owned by: BIOS\n");
/* Ownership change - set OS_OWNED bit */
@@ -737,13 +737,7 @@ grub_ehci_pci_iter (grub_pci_device_t dev, grub_pci_id_t pciid,
grub_pci_write (pciaddr_eecp, GRUB_EHCI_OS_OWNED);
/* Ensure PCI register is written */
grub_pci_read (pciaddr_eecp);
/* Disable SMI. */
pciaddr_eecp = grub_pci_make_address (dev, eecp_offset + 4);
grub_pci_write (pciaddr_eecp, 0);
/* Ensure PCI register is written */
grub_pci_read (pciaddr_eecp);
}
grub_boot_time ("Ownership of EHCI port taken");
}
else if (usblegsup & GRUB_EHCI_OS_OWNED)
/* XXX: What to do in this case - nothing ? Can it happen ? */
@@ -758,12 +752,14 @@ grub_ehci_pci_iter (grub_pci_device_t dev, grub_pci_id_t pciid,
grub_pci_write (pciaddr_eecp, GRUB_EHCI_OS_OWNED);
/* Ensure PCI register is written */
grub_pci_read (pciaddr_eecp);
/* Disable SMI, just to be sure. */
pciaddr_eecp = grub_pci_make_address (dev, eecp_offset + 4);
grub_pci_write (pciaddr_eecp, 0);
/* Ensure PCI register is written */
grub_pci_read (pciaddr_eecp);
}
/* Disable SMI, just to be sure. */
pciaddr_eecp = grub_pci_make_address (dev, eecp_offset + 4);
grub_pci_write (pciaddr_eecp, 0);
/* Ensure PCI register is written */
grub_pci_read (pciaddr_eecp);
}
grub_dprintf ("ehci", "inithw: EHCI grub_ehci_pci_iter: ownership OK\n");