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[PATCH] USB: Always do usb-handoff

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This revised patch (as586b) makes usb-handoff permanently true and no
longer a kernel boot parameter.  It also removes the piix3_usb quirk code;
that was nothing more than an early version of the USB handoff code
(written at a time when Intel's PIIX3 was about the only motherboard with
USB support).  And it adds identifiers for the three PCI USB controller
classes to pci_ids.h.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2005-10-19 12:52:02 -04:00
committed by Greg Kroah-Hartman
parent 46f116eab8
commit 478a3bab8c
4 changed files with 6 additions and 48 deletions
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46
drivers/usb/host/pci-quirks.c
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@@ -23,33 +23,6 @@
#include <linux/acpi.h>
/*
* PIIX3 USB: We have to disable USB interrupts that are
* hardwired to PIRQD# and may be shared with an
* external device.
*
* Legacy Support Register (LEGSUP):
* bit13: USB PIRQ Enable (USBPIRQDEN),
* bit4: Trap/SMI On IRQ Enable (USBSMIEN).
*
* We mask out all r/wc bits, too.
*/
static void __devinit quirk_piix3_usb(struct pci_dev *dev)
{
u16 legsup;
pci_read_config_word(dev, 0xc0, &legsup);
legsup &= 0x50ef;
pci_write_config_word(dev, 0xc0, legsup);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_2, quirk_piix3_usb );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_2, quirk_piix3_usb );
/* FIXME these should be the guts of hcd->reset() methods; resolve all
* the differences between this version and the HCD's version.
*/
#define UHCI_USBLEGSUP 0xc0 /* legacy support */
#define UHCI_USBCMD 0 /* command register */
#define UHCI_USBINTR 4 /* interrupt register */
@@ -83,13 +56,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_2, qui
#define EHCI_USBLEGCTLSTS 4 /* legacy control/status */
#define EHCI_USBLEGCTLSTS_SOOE (1 << 13) /* SMI on ownership change */
int usb_early_handoff __devinitdata = 0;
static int __init usb_handoff_early(char *str)
{
usb_early_handoff = 1;
return 0;
}
__setup("usb-handoff", usb_handoff_early);
/*
* Make sure the controller is completely inactive, unable to
@@ -320,17 +286,11 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev)
{
if (!usb_early_handoff)
return;
if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x00)) { /* UHCI */
if (pdev->class == PCI_CLASS_SERIAL_USB_UHCI)
quirk_usb_handoff_uhci(pdev);
} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x10)) { /* OHCI */
else if (pdev->class == PCI_CLASS_SERIAL_USB_OHCI)
quirk_usb_handoff_ohci(pdev);
} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x20)) { /* EHCI */
else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI)
quirk_usb_disable_ehci(pdev);
}
return;
}
DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff);