linux-kernel - Re: [PATCH 5/8] gpio: omap: convert gpio irq functions to use GPIO offset

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Date:	Fri, 20 Mar 2015 17:06:02 +0200
From:	"Grygorii.Strashko@...aro.org" <grygorii.strashko@...aro.org>
To:	Tony Lindgren <tony@...mide.com>
CC:	Javier Martinez Canillas <javier@...hile0.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>, ssantosh@...nel.org,
	Kevin Hilman <khilman@...prootsystems.com>,
	linux-omap@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/8] gpio: omap: convert gpio irq functions to use GPIO
 offset

On 03/20/2015 01:03 AM, Tony Lindgren wrote:
> * grygorii.strashko@...aro.org <grygorii.strashko@...aro.org> [150319 10:26]:
>> From: Grygorii Strashko <grygorii.strashko@...aro.org>
>>
>> Convert GPIO IRQ functions to use GPIO offset instead of system
>> GPIO numbers. This allows to drop unneeded conversations between
>> system GPIO <-> GPIO offset which are done in many places and
>> many times.
>> It is safe to do now because:
>> - gpiolib always passes GPIO offset to GPIO controller
>> - OMAP GPIO driver converted to use IRQ domain, so
>>    struct irq_data->hwirq contains GPIO offset
>>
>> This is preparation step before removing:
>>   #define GPIO_INDEX(bank, gpio)
>>   #define GPIO_BIT(bank, gpio)
>>   int omap_irq_to_gpio()
> ...
>
>>   static void omap_gpio_unmask_irq(struct irq_data *d)
>>   {
>>   	struct gpio_bank *bank = omap_irq_data_get_bank(d);
>> -	unsigned int gpio = omap_irq_to_gpio(bank, d->hwirq);
>> +	unsigned offset = d->hwirq;
>>   	unsigned int irq_mask = GPIO_BIT(bank, gpio);
>>   	u32 trigger = irqd_get_trigger_type(d);
>>   	unsigned long flags;
>
> This series up to this patch produces a build error that
> would break git bisect:
>
> drivers/gpio/gpio-omap.c: In function ‘omap_gpio_unmask_irq’:
> drivers/gpio/gpio-omap.c:866:37: error: ‘gpio’ undeclared (first use in this function)
>    unsigned int irq_mask = GPIO_BIT(bank, gpio);

Oh. Thanks for catching that :) - splitting/rebasing issue.

-- 
regards,
-grygorii
--
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