From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: Calling suspend() in halt/restart/shutdown -> not a good idea
Date: Wed, 03 Aug 2005 13:41:23 +0200 [thread overview]
Message-ID: <1123069285.30257.29.camel@gaston> (raw)
In-Reply-To: <20050802100435.GC1442@elf.ucw.cz>
On Tue, 2005-08-02 at 12:04 +0200, Pavel Machek wrote:
> Hi!
>
> > Why are we calling driver suspend routines in these ? This is _not_ a
> > good idea ! On various machines, the mecanisms for shutting down are
> > quite different from suspend/resume, and current drivers have too many
> > bugs to make that safe. I keep getting all sort of reports of machines
>
> Well, powerdown at the end of suspend-to-disk should be *very* similar
> to normal powerdown => if device_suspend() breaks something, it is a
> bug in driver anyway.
Power Down != Suspend. Period.
> Now, we may have a lot of such bugs, and the change went in too early,
> but in the long run...
Crap. It's not the same thing.
Ben.
prev parent reply other threads:[~2005-08-03 11:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-01 15:09 Calling suspend() in halt/restart/shutdown -> not a good idea Benjamin Herrenschmidt
2005-08-01 18:37 ` Marc Ballarin
2005-08-01 20:08 ` Benjamin Herrenschmidt
2005-08-02 9:54 ` Pavel Machek
2005-08-03 11:40 ` Benjamin Herrenschmidt
2005-08-03 16:53 ` Kyle Moffett
2005-08-03 19:59 ` Benjamin Herrenschmidt
2005-08-04 20:56 ` Pavel Machek
2005-08-04 21:04 ` Pavel Machek
2005-08-02 9:53 ` Pavel Machek
2005-08-02 14:40 ` Eric W. Biederman
2005-08-02 14:45 ` Pavel Machek
2005-08-03 11:43 ` Benjamin Herrenschmidt
2005-08-03 11:43 ` Benjamin Herrenschmidt
2005-08-03 11:38 ` Benjamin Herrenschmidt
2005-08-04 2:27 ` Andrew Morton
2005-08-02 10:04 ` Pavel Machek
2005-08-03 11:41 ` Benjamin Herrenschmidt [this message]
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