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From: Jiri Slaby <jirislaby@gmail.com>
To: David Brownell <dbrownell@users.sourceforge.net>
Cc: USB list <linux-usb@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Alan Stern <stern@rowland.harvard.edu>
Subject: quirk_usb_disable_ehci takes 2x 1.5s on boot
Date: Mon, 05 Jan 2009 14:41:11 +0100	[thread overview]
Message-ID: <49620DF7.9040006@gmail.com> (raw)

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.

Thanks.

             reply	other threads:[~2009-01-05 13:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-05 13:41 Jiri Slaby [this message]
2009-01-05 22:44 ` quirk_usb_disable_ehci takes 2x 1.5s on boot David Brownell
2009-01-06  0:36 ` Robert Hancock
2009-02-24 13:32   ` Jiri Slaby

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