linux-kernel - Re: [RFC 10/10] irqchip: Make versatile fpga irq driver a generic chip

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Message-ID: <20130610090357.GQ18614@n2100.arm.linux.org.uk>
Date:	Mon, 10 Jun 2013 10:03:58 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Grant Likely <grant.likely@...aro.org>
Cc:	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linuxppc-dev@...ts.ozlabs.org,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [RFC 10/10] irqchip: Make versatile fpga irq driver a generic
	chip

On Mon, Jun 10, 2013 at 01:49:22AM +0100, Grant Likely wrote:
> This is an RFC patch to convert the versatile FPGA irq controller driver
> to use generic irq chip. It builds on the series that extends the
> generic chip code to allow a linear irq domain to contain one or more
> generic irq chips so that each interrupt controller doesn't need to hand
> code the generic chip setup.

NAK, this makes functional changes.  You assume that the validity mask is
a set of zeros followed by a set of ones.  This is not always the case.
The PIC on Integrator/CP only has bits 29-22 and 11-0 set because 21-12
are not valid.
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