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

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Date:	Thu, 19 Mar 2015 16:03:35 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	grygorii.strashko@...aro.org
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

* 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);

Applying the following patch makes things build again.

Regards,

Tony
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