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From: Greg KH <gregkh@suse.de>
To: Mark Lord <lkml@rtr.ca>, Alan Stern <stern@rowland.harvard.edu>,
	Oliver Neukum <oneukum@suse.de>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
	Markus <lists4me@web.de>, Jeff Chua <jeff.chua.linux@gmail.com>,
	"Antonino A. Daplas" <adaplas@gmail.com>,
	linux-alpha@vger.kernel.org,
	Stefan Becker <Stefan.Becker@nokia.com>, Andi Kleen <ak@suse.de>,
	Dave Jones <davej@redhat.com>, Len Brown <len.brown@intel.com>,
	Pavel Machek <pavel@ucw.cz>, Thomas Gleixner <tglx@linutronix.de>,
	Jakub Jelinek <jakub@redhat.com>,
	Jeff Dike <jdike@linux.intel.com>,
	user-mode-linux-devel@lists.sourceforge.net,
	Adrian Bunk <bunk@kernel.org>
Subject: Re: [1/4] 2.6.23-rc6: known regressions
Date: Thu, 13 Sep 2007 02:36:51 -0700	[thread overview]
Message-ID: <20070913093651.GA5077@suse.de> (raw)
In-Reply-To: <46E8A572.7050209@rtr.ca>

On Wed, Sep 12, 2007 at 10:50:26PM -0400, Mark Lord wrote:
> Michal Piotrowski wrote:
>> Hi all,
>> Here is a list of some known regressions in 2.6.23-rc6.
> ...
>
> Missing from the list:
>
> USB "autosuspend" feature (new in 2.6.23) breaks *lots* of devices.
> Many have since been blacklisted in one-at-a-time discovery patches,
> but that's really just the tip of the iceberg.
>
> This "feature" breaks a TON of user-visible things,
> mostly USB storage devices (USB drives/pens, digicams, etc..).
>
> The functionality is broken for just too much stuff,
> and needs to either be reverted or defaulted to "off" rather than "on".

Ok, after conferring with Oliver this morning, I think the best solution
here is to both revert the usb-storage suspend patch as it has some
basic problems that can cause data loss, _and_ add the change to the
kernel that by default disables autosuspend on all USB devices except
hubs.

If anyone has any objections to this, please let me know.

thanks,

greg k-h

WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh@suse.de>
To: Mark Lord <lkml@rtr.ca>, Alan Stern <stern@rowland.harvard.edu>,
	Oliver Neukum <oneukum@suse.de>
Cc: Jakub Jelinek <jakub@redhat.com>, Len Brown <len.brown@intel.com>,
	Adrian Bunk <bunk@kernel.org>,
	Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
	Jeff Chua <jeff.chua.linux@gmail.com>,
	Stefan Becker <Stefan.Becker@nokia.com>,
	LKML <linux-kernel@vger.kernel.org>, Andi Kleen <ak@suse.de>,
	Markus <lists4me@web.de>, Thomas Gleixner <tglx@linutronix.de>,
	Pavel Machek <pavel@ucw.cz>,
	linux-alpha@vger.kernel.org,
	user-mode-linux-devel@lists.sourceforge.net,
	Dave Jones <davej@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jeff Dike <jdike@linux.intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Ingo Molnar <mingo@elte.hu>,
	"Antonino A. Daplas" <adaplas@gmail.com>
Subject: Re: [uml-devel] [1/4] 2.6.23-rc6: known regressions
Date: Thu, 13 Sep 2007 02:36:51 -0700	[thread overview]
Message-ID: <20070913093651.GA5077@suse.de> (raw)
In-Reply-To: <46E8A572.7050209@rtr.ca>

On Wed, Sep 12, 2007 at 10:50:26PM -0400, Mark Lord wrote:
> Michal Piotrowski wrote:
>> Hi all,
>> Here is a list of some known regressions in 2.6.23-rc6.
> ...
>
> Missing from the list:
>
> USB "autosuspend" feature (new in 2.6.23) breaks *lots* of devices.
> Many have since been blacklisted in one-at-a-time discovery patches,
> but that's really just the tip of the iceberg.
>
> This "feature" breaks a TON of user-visible things,
> mostly USB storage devices (USB drives/pens, digicams, etc..).
>
> The functionality is broken for just too much stuff,
> and needs to either be reverted or defaulted to "off" rather than "on".

Ok, after conferring with Oliver this morning, I think the best solution
here is to both revert the usb-storage suspend patch as it has some
basic problems that can cause data loss, _and_ add the change to the
kernel that by default disables autosuspend on all USB devices except
hubs.

If anyone has any objections to this, please let me know.

thanks,

greg k-h

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  reply	other threads:[~2007-09-13  9:36 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-12 16:58 [1/4] 2.6.23-rc6: known regressions Michal Piotrowski
2007-09-12 16:58 ` [uml-devel] " Michal Piotrowski
2007-09-12 17:09 ` Adrian Bunk
2007-09-12 17:09   ` Adrian Bunk
2007-09-12 17:15 ` Linus Torvalds
2007-09-12 17:15   ` [uml-devel] " Linus Torvalds
2007-09-12 17:19 ` Thomas Gleixner
2007-09-12 17:19   ` [uml-devel] " Thomas Gleixner
2007-09-12 17:38   ` Michal Piotrowski
2007-09-12 17:38     ` [uml-devel] " Michal Piotrowski
2007-09-13  2:50 ` Mark Lord
2007-09-13  2:50   ` [uml-devel] " Mark Lord
2007-09-13  9:36   ` Greg KH [this message]
2007-09-13  9:36     ` Greg KH
2007-09-13 13:21     ` Mark Lord
2007-09-13 13:21       ` [uml-devel] " Mark Lord
2007-09-13 14:19     ` Alan Stern
2007-09-13 14:41       ` Greg KH
2007-09-13 14:50         ` James Bottomley
2007-09-13 17:09 ` H. Peter Anvin

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