Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754012AbXKWFTX (ORCPT ); Fri, 23 Nov 2007 00:19:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751900AbXKWFTO (ORCPT ); Fri, 23 Nov 2007 00:19:14 -0500 Received: from partizan.velesys.com ([213.184.230.195]:57284 "EHLO partizan.velesys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751691AbXKWFTN (ORCPT ); Fri, 23 Nov 2007 00:19:13 -0500 Date: Fri, 23 Nov 2007 07:19:55 +0200 From: "Kirill A. Shutemov" To: Alan Stern Cc: Marin Mitov , Kernel development list Subject: Re: [linux-usb-devel] 2.6.24-rc3-mm1: usb mouse doesn't work Message-ID: <20071123051955.GA28946@localhost.localdomain> References: <200711221941.44646.mitov@issp.bas.bg> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="BXVAT5kNtrzKuDFl" Content-Disposition: inline In-Reply-To: X-Operating-System: ALT Linux Sisyphus (20070101) (Kernel 2.6.18-std-smp-alt8) User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2183 Lines: 66 --BXVAT5kNtrzKuDFl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On [Thu, 22.11.2007 21:51], Alan Stern wrote: > On Thu, 22 Nov 2007, Marin Mitov wrote: >=20 > > > > > I've had some strangenesses with USB lately. Sometimes running `= lsusb' > > > > > makes the USB system notice a newly attached device. > > > > > > > > No. But I have new messages in dmesg: > > > > > > > > uhci_hcd 0000:00:1d.3: FGR not stopped yet! > > > > uhci_hcd 0000:00:1d.2: FGR not stopped yet! > > > > uhci_hcd 0000:00:1d.1: FGR not stopped yet! > > > > uhci_hcd 0000:00:1d.0: FGR not stopped yet! > > > > > > > > > Is that "FGR not stopped yet!" messgae new behaviour? > > > > > > > > It is a new message since 2.6.24-rc3. I have never try -mm tree bef= ore. > > > > > > These messages could indicate a timing problem. You can see the code > > > that writes the messages near the end of wakeup_rh() in > > > drivers/usb/host/uhci-hcd.c. > > > > > > The message gets written if the controller hardware hasn't turned off= a > > > particular bit after a 4-us delay. If the udelay() function wasn't > > > working right, it could cause this problem. > >=20 > > udelay() _is_ OK for 2.6.24-rc3, so it is not the cause of the problem >=20 > But is it OK for 2.6.24-rc3-mm1? Kirill said specifically that=20 > 2.6.24-rc3 does not display the message but 2.6.24-rc3-mm1 does. How can I test it? --=20 Regards, Kirill A. Shutemov + Belarus, Minsk + Velesys LLC, http://www.velesys.com/ + ALT Linux Team, http://www.altlinux.com/ --BXVAT5kNtrzKuDFl Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQFHRmL6bWYnhzC5v6oRAo56AJ9VaETfNesvewi6kfvm9vCRejfyPwCfVXIj jHwrzSKl0iTG63JUH8d0nUg= =OZnh -----END PGP SIGNATURE----- --BXVAT5kNtrzKuDFl-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/