linux-kernel - Re: [PATCH 1/4] gpio: remove broken irq_to

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Date:	Mon, 15 Feb 2016 17:01:09 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Arnd Bergmann <arnd@...db.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Russell King <rmk+kernel@....linux.org.uk>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Burton <paul.burton@...tec.com>, linux-mips@...ux-mips.org
Subject: Re: [PATCH 1/4] gpio: remove broken irq_to_gpio() interface

On 02/15/2016 04:46 PM, Arnd Bergmann wrote:
> +static inline __deprecated int irq_to_gpio(unsigned int irq)
> +{
> +	/* this has clearly not worked for a long time */
> +	return -EINVAL;
> +}
> +
>  #define IRQ_TO_BIT(irq) BIT(irq_to_gpio(irq) & 0x1f)

The issue seems to be a fallout from commit 832f5dacfa0b ("MIPS: Remove all
the uses of custom gpio.h").

The irq_to_gpio() should be replaced with "(irq - JZ4740_IRQ_GPIO(0))".

- Lars