Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757098AbYFBK2W (ORCPT ); Mon, 2 Jun 2008 06:28:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751770AbYFBK2M (ORCPT ); Mon, 2 Jun 2008 06:28:12 -0400 Received: from yw-out-2324.google.com ([74.125.46.31]:61841 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752269AbYFBK2K (ORCPT ); Mon, 2 Jun 2008 06:28:10 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=cLtyM1TZqQw7DDo6MMPUT6FS3OXffB2iqgGuM7hrqnd0s9JSmJZTtclcDq5m+6G8xyLI/RmSE5C75yFwTEKlY4ibJzo/ie1kfYUfsNAq7uivJd3nvp1z8uB7y+Z04le+T/Pmqo0IUzjrUj/0gQJp6/J4Me7Qmaam+7037yZDFwk= Message-ID: <3ae72650806020328s7afa7eccr758bf613b61afc5@mail.gmail.com> Date: Mon, 2 Jun 2008 12:28:01 +0200 From: "Kay Sievers" To: "Jan Engelhardt" Subject: Re: floppy question of the hour Cc: "Gene Heskett" , "Phillip Susi" , "Stefan Richter" , linux-kernel@vger.kernel.org, "Jens Axboe" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200805232114.20937.gene.heskett@gmail.com> <200805240852.58268.gene.heskett@gmail.com> <483C81DE.8060002@cfl.rr.com> <200805271826.18320.gene.heskett@gmail.com> X-Google-Sender-Auth: 6030ab0261416986 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1207 Lines: 28 On Sun, Jun 1, 2008 at 9:00 PM, Jan Engelhardt wrote: > > On Wednesday 2008-05-28 00:26, Gene Heskett wrote: >>On Tuesday 27 May 2008, Phillip Susi wrote: >>>Gene Heskett wrote: >> >>Also, does anyone know how long after a floppy is inserted before it is >>recognized? From observation today, it appears to be something in the 5 minute >>territory before a getfdprm returns data instead of "/dev/fd0: no such device". > > I have a SONY USB floppy drive which used to get read within 2s > after inserting a new floppy. Which means it somehow signalled > the host, probably through an USB command. > > Just as I tried again now (with 2.6.23.17), this does not happen > anymore so I suspect udev or the kernel changed in some way. There is no USB command for media change notifications. We periodically poll USB floppies with HAL. We can do this, because unlike legacy floppies, USB floppies seems not to spin up the drive when polled. Kay -- 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/