linux-kernel - Re: [PATCH] PM: Remove destroy_suspended

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Message-ID: <20080324155735.GA4069@atrey.karlin.mff.cuni.cz>
Date:	Mon, 24 Mar 2008 16:57:35 +0100
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Greg KH <greg@...ah.com>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Len Brown <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Michael Buesch <mb@...sch.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] PM: Remove destroy_suspended_device()

Hi!

> After 2.6.24 there was a plan to make the PM core acquire all device
> semaphores during a suspend/hibernation to protect itself from
> concurrent operations involving device objects.  That proved to be
> too heavy-handed and we found a better way to achieve the goal, but
> before it happened, we had introduced the functions
> device_pm_schedule_removal() and destroy_suspended_device() to allow
> drivers to "safely" destroy a suspended device and we had adapted some
> drivers to use them.  Now that these functions are no longer necessary,
> it seems reasonable to remove them and modify their users to use the
> normal device unregistration instead.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>

ACK.
								Pavel
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