Jiri Slaby wrote:
Hi, I don't know since which moment (maybe I changed something in bios, but usb legacy kbd was ever enabled), but quirk_usb_disable_ehci takes for both of my ehci controllers 1.5 s. More precisely, the time is spent in pci_write_config_byte(pdev, offset + 3, 1); by outb((u8)value, 0xCFC + (reg & 3)); from pci_conf1_write deep in the callstack. Is there any workaround known or something. Turning legacy usb off is not an option, I want to control grub.
Most likely the PCI config space write is causing some SMM trap and the BIOS is taking forever to do whatever it's doing. It doesn't report that the handoff failed, though?
I'd look for a BIOS update.. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
