netdev - Re: [PATCH] PHYLIB: IRQ event workqueue handling fixes

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Message-ID: <Pine.LNX.4.64N.0710181231350.4701@blysk.ds.pg.gda.pl>
Date:	Thu, 18 Oct 2007 12:37:33 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Jarek Poplawski <jarkao2@...pl>
cc:	Andy Fleming <afleming@...escale.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jgarzik@...ox.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PHYLIB: IRQ event workqueue handling fixes

On Thu, 18 Oct 2007, Jarek Poplawski wrote:

> After rethinking, it looks like this last cancel should be useless.
> So, if phy_interrupt() schedules only if !PHY_HALTED and phy_change()
> does enable_irq() with no exeptions, it seems phy_interrupt() even
> without lock must see PHY_HALTED state before this free_irq() with
> possible DEBUG_SHIRQ call, then maybe only this safety:
> 
> 	WARN_ON(work_pending(&phydev->phy_queue));

 Good point.

  Maciej
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