linux-kernel - Re: [PATCH] genirq: Provide reverse compat handling for irq

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Message-ID: <alpine.LFD.2.00.1012011123150.2653@localhost6.localdomain6>
Date:	Wed, 1 Dec 2010 11:28:28 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Lennert Buytenhek <buytenh@...tstofly.org>
cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] genirq: Provide reverse compat handling for irq_chip
 methods.

On Tue, 30 Nov 2010, Lennert Buytenhek wrote:

> kernel/irq/chip.c provides compat wrappers for when users of the
> new-style (->irq_foo()) irq_chip methods try to call into irq_chips
> that provide only old-style (->foo()) methods, but doesn't currently
> provide compatibility in the other direction.
> 
> As there exist chained irq flow handlers outside kernel/irq/ that have
> not been converted over to call the new methods yet, this means that
> the irq_chips that they are chained off can't be converted to the new
> methods yet.
> 
> This patch adds reverse compat wrappers, so that old-style flow
> handlers can call into new-style irq_chips, too, and the flow handlers
> and irq_chips can be converted to the new API independently.

Uuurg. That's backwards. Why not fixing the flow handlers first ?

Thanks,

	tglx
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