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From: "Carlo E. Prelz" <fluido@fluido.as>
To: Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org,
	linux-usb-devel@lists.sourceforge.net
Subject: Re: ATI RS480-based motherboard: stuck while booting with kernel >= 2.6.15 rc1
Date: Sun, 5 Feb 2006 11:33:33 +0100	[thread overview]
Message-ID: <20060205103333.GA27735@epio.fluido.as> (raw)
In-Reply-To: <20060122111112.GA15320@epio.fluido.as>

Time has passed without further mention of this problem. Today I took
some time to discover exactly where the boot process was hanging. I
found the place. 

In drivers/usb/host/pci-quirks.c, in function quirk_usb_disable_ehci
(should start around line 211) there is a stanza that reads:

			/* always say Linux will own the hardware
			 * by setting EHCI_USBLEGSUP_OS.
			 */

			pci_write_config_byte(pdev, offset + 3, 1);

On my sapphire athlon64 motherboard (see the thread for more details),
this call never returns (without generating any output). I commented
it out, and now the EHCI subsystem works OK (currently running
2.6.16rc2).

I do not know what the right patch should be. 

Carlo

-- 
  *         Se la Strada e la sua Virtu' non fossero state messe da parte,
* K * Carlo E. Prelz - fluido@fluido.as             che bisogno ci sarebbe
  *               di parlare tanto di amore e di rettitudine? (Chuang-Tzu)

  reply	other threads:[~2006-02-05 10:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-20 12:32 ATI RS480-based motherboard: stuck while booting with kernel >= 2.6.15 rc1 Carlo E. Prelz
2006-01-21  9:09 ` Andrew Morton
2006-01-21 12:57   ` Carlo E. Prelz
2006-01-21 20:58     ` Andrew Morton
2006-01-21 21:28       ` Erwin Rol
2006-01-21 22:04         ` Dave Jones
2006-01-22  4:14           ` Kurt Wall
2006-01-22  7:40       ` Carlo E. Prelz
2006-01-22  7:55         ` Andrew Morton
2006-01-22  8:30           ` Carlo E. Prelz
2006-01-22 11:11           ` Carlo E. Prelz
2006-02-05 10:33             ` Carlo E. Prelz [this message]
2006-02-05 19:45               ` [linux-usb-devel] " David Brownell
2006-02-06  8:02                 ` Carlo E. Prelz
2006-02-06 16:24                   ` David Brownell
2006-02-06 16:50                     ` Carlo E. Prelz
2006-02-06 17:31                       ` David Brownell
2006-02-06 17:45                         ` Carlo E. Prelz
2006-01-23 19:01           ` David Brownell
2006-01-23 21:47             ` Carlo E. Prelz
2006-01-24  4:42             ` Greg KH
2006-01-24 15:15               ` David Brownell

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