linux-kernel - Re: [RFC v1 15/25] genirq: Kill the first parameter 'irq' of irq_flow_handler

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Message-ID: <alpine.DEB.2.11.1505201748000.4225@nanos>
Date:	Wed, 20 May 2015 17:48:19 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Russell King <linux@....linux.org.uk>,
	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>,
	Roland Stigge <stigge@...com.de>,
	Tony Lindgren <tony@...mide.com>,
	Rajendra Nayak <rnayak@...com>, Paul Walmsley <paul@...an.com>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Arnd Bergmann <arnd@...db.de>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Tony Luck <tony.luck@...el.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	Russell King <rmk+kernel@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [RFC v1 15/25] genirq: Kill the first parameter 'irq' of
 irq_flow_handler_t

On Wed, 20 May 2015, Jiang Liu wrote:

> On 2015/5/20 23:28, Thomas Gleixner wrote:
> > On Wed, 20 May 2015, Jiang Liu wrote:
> >> -static void locomo_handler(unsigned int irq, struct irq_desc *desc)
> >> +static void locomo_handler(struct irq_desc *desc)
> >>  {
> >>  	struct locomo *lchip = irq_desc_get_chip_data(desc);
> >> +	unsigned int irq;
> >>  	int req, i;
> > 
> > That leaves irq unitialized ....
> That should be OK, 'irq' here is just a local variable.
> Actually it may be changed as:
>         if (req) {
>                 /* generate the next interrupt(s) */
> -                irq = lchip->irq_base;
> +                unsigned int irq = lchip->irq_base;

Indeed. 
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