On Thu, 2 Aug 2007, David Engraf wrote: > This would be solution too, but what if someone uses the uhci controller > and don't want the > ehci. So a single Kconfig flag wouldn't be enough, we have to add 3 > flags for uchi, ohci and > ehci. I think this maybe a little bit difficult when configuring the kernel. > The best solution would be when we could use the CONFIG_USB_xxxx_HCD > flag, but it > seems that some hardware has problems when we disable the handoff and > let the BIOS > control the usb controller. Do you know any of this hardware?
The email messages are hidden in the depths of the linux-usb-devel archives. Maybe you can find them by checking the Git history for drivers/usb/host/pci-quirks.c, finding the dates for patches that affected the handoff code, and then searching through the archives near those dates. IIRC the problems arose on some MIPS machines. And I don't think the problem involved letting the firmware manage the USB controller; I think the problem came when the controller driver tried to do the handoff later on. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
