linux-kernel - Re: [PATCH 01/15] ARM: kill off set_irq

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Date:	Sat, 13 Jun 2015 19:32:20 +0800
From:	Wan ZongShun <mcuos.com@...il.com>
To:	Rob Herring <robh@...nel.org>
Cc:	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>, arm@...nel.org,
	Sekhar Nori <nsekhar@...com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Hans Ulli Kroll <ulli.kroll@...glemail.com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	Imre Kaloz <kaloz@...nwrt.org>,
	Krzysztof Halasa <khalasa@...p.pl>,
	Greg Ungerer <gerg@...inux.org>,
	Roland Stigge <stigge@...com.de>,
	Tony Lindgren <tony@...mide.com>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Simtec Linux Team <linux@...tec.co.uk>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-omap@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 01/15] ARM: kill off set_irq_flags usage

2015-06-10 2:26 GMT+08:00 Rob Herring <robh@...nel.org>:
> set_irq_flags is ARM specific with custom flags which have genirq
> equivalents. Convert drivers to use the genirq interfaces directly, so we
> can kill off set_irq_flags. The translation of flags is as follows:
>
> IRQF_VALID -> !IRQ_NOREQUEST
> IRQF_PROBE -> !IRQ_NOPROBE
> IRQF_NOAUTOEN -> IRQ_NOAUTOEN
>
> For IRQs managed by an irqdomain, the irqdomain core code handles clearing
> and setting IRQ_NOREQUEST already, so there is no need to do this in
> .map() functions and we can simply remove the set_irq_flags calls. Some
> users also set IRQ_NOPROBE and this has been maintained although it is not
> clear that is really needed. There appears to be a great deal of blind
> Cc: Robert Jarzmik <robert.jarzmik@...e.fr>
> Cc: Simtec Linux Team <linux@...tec.co.uk>
> Cc: Kukjin Kim <kgene@...nel.org>
> Cc: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: Wan ZongShun <mcuos.com@...il.com>

For Nuvoton W90x900
Acked-by: Wan ZongShun <mcuos.com@...il.com>

> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-omap@...r.kernel.org
> +++ b/arch/arm/mach-w90x900/irq.c
> @@ -211,6 +211,6 @@ void __init nuc900_init_irq(void)
>         for (irqno = IRQ_WDT; irqno <= IRQ_ADC; irqno++) {
>                 irq_set_chip_and_handler(irqno, &nuc900_irq_chip,
>                                          handle_level_irq);
> -               set_irq_flags(irqno, IRQF_VALID);
> +               irq_clear_status_flags(irqno, IRQ_NOREQUEST);
>         }
>  }
> --
> 2.1.0
>



-- 
---
Vincent Wan(Zongshun)
www.mcuos.com
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