linux-kernel - Re: [PATCH v5 08/27] irq_domain: Move irq_domain code from powerpc to kernel/irq

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Date:	Thu, 16 Feb 2012 18:52:12 +0100
From:	"Cousson, Benoit" <b-cousson@...com>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Milton Miller <miltonm@....com>,
	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH v5 08/27] irq_domain: Move irq_domain code from powerpc
 to kernel/irq

OK, forget about it, I've just seen your email on that and pulled your 
latest update.

Regards,
Benoit

On 2/16/2012 6:38 PM, Cousson, Benoit wrote:
> Hi Grant,
>
> It looks like there is a small regression in that update, it cannot
> build due to a missing semi-colon.
>
> On 2/16/2012 10:09 AM, Grant Likely wrote:
>> +/**
>> + * irq_find_mapping() - Find a linux irq from an hw irq number.
>> + * @host: domain owning this hardware interrupt
>> + * @hwirq: hardware irq number in that host space
>> + *
>> + * This is a slow path, for use by generic code. It's expected that an
>> + * irq controller implementation directly calls the appropriate low
>> level
>> + * mapping function.
>> + */
>> +unsigned int irq_find_mapping(struct irq_domain *host,
>> + irq_hw_number_t hwirq)
>> +{
>> + unsigned int i;
>> + unsigned int hint = hwirq % irq_virq_count;
>> +
>> + /* Look for default host if nececssary */
>> + if (host == NULL)
>> + host = irq_default_host;
>> + if (host == NULL)
>> + return NO_IRQ;
>> +
>> + /* legacy -> bail early */
>> + if (host->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
>> + return hwirq;
>> +
>> + /* Slow path does a linear search of the map */
>> + if (hint == 0)
>> + hint = 1;
>> + i = hint;
>> + do {
>> + struct irq_data *data = irq_get_irq_data(i);
>> + if (data&& (data->domain == host)&& (data->hwirq == hwirq))
>> + return i;
>> + i++;
>> + if (i>= irq_virq_count)
>> + i = 1
>
> The ";" is missing.
>
> Regards,
> Benoit

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