I no longer have suitable hardware for testing this patch. If anyone
with an OHCI host controller could try it out, I would like to hear if
it causes any problems.
Thank you all.
Alan Stern
Index: usb-4.x/drivers/usb/host/pci-quirks.c
===================================================================
--- usb-4.x.orig/drivers/usb/host/pci-quirks.c
+++ usb-4.x/drivers/usb/host/pci-quirks.c
@@ -783,15 +783,9 @@ static void quirk_usb_handoff_ohci(struc
/* disable interrupts */
writel((u32) ~0, base + OHCI_INTRDISABLE);
- /* Reset the USB bus, if the controller isn't already in RESET */
- if (control & OHCI_HCFS) {
- /* Go into RESET, preserving RWC (and possibly IR) */
- writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL);
- readl(base + OHCI_CONTROL);
-
- /* drive bus reset for at least 50 ms (7.1.7.5) */
- msleep(50);
- }
+ /* Go into the USB_RESET state, preserving RWC (and possibly IR) */
+ writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL);
+ readl(base + OHCI_CONTROL);
/* software reset of the controller, preserving HcFmInterval */
if (!no_fminterval)
--
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