linux-kernel - Re: [PATCH v2] pinctrl: st: add irq_request/release

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Date:   Thu, 23 Mar 2017 10:11:15 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Patrice CHOTARD <patrice.chotard@...com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Peter Griffin <peter.griffin@...aro.org>,
        Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH v2] pinctrl: st: add irq_request/release_resources callbacks

On Thu, Mar 16, 2017 at 6:26 PM,  <patrice.chotard@...com> wrote:

> From: Patrice Chotard <patrice.chotard@...com>
>
> When using GPIO as IRQ source, the GPIO must be configured
> in INPUT. Callbacks dedicated for this was missing in
> pinctrl-st driver.
>
> This fix the following kernel error when trying to lock a gpio
> as IRQ:
>
> [    7.521095] gpio gpiochip7: (PIO11): gpiochip_lock_as_irq: tried to flag a GPIO set as output for IRQ
> [    7.526018] gpio gpiochip7: (PIO11): unable to lock HW IRQ 6 for IRQ
> [    7.529405] genirq: Failed to request resources for 0-0053 (irq 81) on irqchip GPIO
>
> Signed-off-by: Patrice Chotard <patrice.chotard@...com>

Patch applied for fixes.

Yours,
Linus Walleij