linux-kernel - [PATCH 1/1] drivers/usb/host/pci-quirks.c: wait for EHCI handoff far too long in quirk_usb_disable

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Message-Id: <1220747393-10401-2-git-send-email-steven@uplinklabs.net>
Date:	Sat,  6 Sep 2008 17:29:53 -0700
From:	Steven Noonan <steven.noonan@...inklabs.net>
To:	linux-kernel@...r.kernel.org
Cc:	Steven Noonan <steven@...inklabs.net>
Subject: [PATCH 1/1] drivers/usb/host/pci-quirks.c: wait for EHCI handoff far too long in quirk_usb_disable_ehci()

This patch fixes a very noticeable bootup delay on some
systems (in my particular case, an HP dv5178us). The
problem is caused by a buggy BIOS which doesn't properly
announce that the handoff was completed.

The delay in the current version of pci-quirks.c is 5 seconds,
which I've cut down to 0.5 seconds.

Signed-off-by: Steven Noonan <steven@...inklabs.net>
---
 drivers/usb/host/pci-quirks.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index ae6e70e..9a3609a 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -271,7 +271,7 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 			/* if boot firmware now owns EHCI, spin till
 			 * it hands it over.
 			 */
-			msec = 5000;
+			msec = 500;
 			while ((cap & EHCI_USBLEGSUP_BIOS) && (msec > 0)) {
 				tried_handoff = 1;
 				msleep(10);
-- 
1.6.0.1

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