linux-kernel - Re: [PATCH 08/14] irqchip: Add driver for WPCM450 interrupt controller

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Date:   Mon, 5 Apr 2021 19:25:54 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     Jonathan Neuschäfer <j.neuschaefer@....net>
Cc:     Marc Zyngier <maz@...nel.org>, openbmc@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 08/14] irqchip: Add driver for WPCM450 interrupt
 controller

On Fri, Mar 26, 2021 at 07:52:07PM +0100, Jonathan Neuschäfer wrote:
> On Wed, Mar 24, 2021 at 05:16:35PM +0000, Marc Zyngier wrote:
> > On Sat, 20 Mar 2021 18:16:04 +0000, Jonathan Neuschäfer <j.neuschaefer@....net> wrote:
[...]
> > > +	/* Disable (mask) all interrupts */
> > > +	writel(0xffffffff, aic->regs + AIC_MDCR);
> > 
> > Consider using relaxed accessors throughout this driver.
> 
> I'll read up on how to use them correctly.

Upon further consideration, I decided not to bother with relaxed MMIO
access, because it doesn't make a difference on the target platform —
Nuvoton WPCM450 with ARM926 (ARMv5).


Best regards,
Jonathan Neuschäfer

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