linux-kernel - Re: USB: on suspend to ram/disk all usb devices are replugged

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Message-ID: <20070401182945.GA11239@elf.ucw.cz>
Date:	Sun, 1 Apr 2007 20:29:45 +0200
From:	Pavel Machek <pavel@....cz>
To:	David Zeuthen <davidz@...hat.com>
Cc:	Maxim <maximlevitsky@...il.com>, Pete Zaitcev <zaitcev@...hat.com>,
	Alan Stern <stern@...land.harvard.edu>, gregkh@...e.de,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: USB: on suspend to ram/disk all usb devices are replugged

Hi!

> > Problem is that suspending _with_ removable mass storage devices
> > attached just will not work. User will unplug them, then complain
> > about corruption. Advanced user will unplug them, work with them
> > somewhere else, replug them, then loose filesystem.
> > 
> > Feel free to send patch to teach filesystems to handle this.
> 
> I was suggesting in the Bugzilla that the file system should actually do
> this. I don't have a patch for this, sorry. 

Unfortunately it is a _lot_ of work, so noone has time for that :-(.

> > Check your facts. Laptops do not melt. I know, I put them into my bed,
> > covered with pillow, and let them complain (evo 560c). ACPI thermals
> > can handle that.
> 
> Some laptops may severely overheat especially if the backlight is not
> turned off (See: Apple hardware). Pretending that all hardware "just
> works" or that all drivers "just work" is nice but not really useful in
> the real life especially when we're talking about damaging hardware.

Apple should fix their hardware, then. And you should not run Linux
there, because their hardware is broken; they assume OS X.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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