linux-kernel - Re: [RFC v2 PATCH 06/14] irq: add struct ipi

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Message-ID: <561D156D.1090403@imgtec.com>
Date:	Tue, 13 Oct 2015 15:30:05 +0100
From:	Qais Yousef <qais.yousef@...tec.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	<linux-kernel@...r.kernel.org>, <jason@...edaemon.net>,
	<marc.zyngier@....com>, <jiang.liu@...ux.intel.com>,
	<ralf@...ux-mips.org>, <linux-mips@...ux-mips.org>
Subject: Re: [RFC v2 PATCH 06/14] irq: add struct ipi_mapping and its helper
 functions

On 10/13/2015 02:31 PM, Thomas Gleixner wrote:
> On Tue, 13 Oct 2015, Qais Yousef wrote:
>
> +
> +int irq_unmap_ipi(struct ipi_mapping *map,
> +		  unsigned int cpu, irq_hw_number_t *hwirq)
> +{
> +	if (cpu >= map->nr_cpus)
> +		return -EINVAL;
> +
> +	if (map->cpumap[cpu] == INVALID_HWIRQ)
> +		return -EINVAL;
> +
> +	if (hwirq)
> +		*hwirq = map->cpumap[cpu];
> Why do we store hwirq in unmap?

So that the irqchip driver can return the hwirq to its available IPI pool.

>
> All these new functions lack kerneldoc comments.

Apologies about the missing docs here and in other places.

Thanks,
Qais
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