linux-kernel - Re: [PATCH] keyboard/tc3589x-keypad.c: set IRQF

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Date:	Wed, 4 Mar 2015 15:11:26 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Valentin Rothberg <Valentin.Rothberg@...6.fr>
Cc:	linus.walleij@...aro.org, wsa@...-dreams.de,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] keyboard/tc3589x-keypad.c: set IRQF_ONESHOT flag to
 ensure IRQ request

On Mon, Mar 02, 2015 at 04:21:06PM +0100, Valentin Rothberg wrote:
> Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject
> bogus threaded irq requests") threaded IRQs without a primary handler
> need to be requested with IRQF_ONESHOT, otherwise the request will fail.
> 
> Currently, plat->irqtype is only set to IRQF_TRIGGER_FALLING.  This
> patch sets the ONESHOT flag directly in request_threaded_irq() to
> enforce the flag without being affected by future changes to
> plat->irqtype.
> 
> Generated by: scripts/coccinelle/misc/irqf_oneshot.cocci
> 
> Signed-off-by: Valentin Rothberg <Valentin.Rothberg@...6.fr>

Applied, thank you.

> ---
>  drivers/input/keyboard/tc3589x-keypad.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/keyboard/tc3589x-keypad.c b/drivers/input/keyboard/tc3589x-keypad.c
> index 8ff612d..5639325 100644
> --- a/drivers/input/keyboard/tc3589x-keypad.c
> +++ b/drivers/input/keyboard/tc3589x-keypad.c
> @@ -411,9 +411,9 @@ static int tc3589x_keypad_probe(struct platform_device *pdev)
>  
>  	input_set_drvdata(input, keypad);
>  
> -	error = request_threaded_irq(irq, NULL,
> -			tc3589x_keypad_irq, plat->irqtype,
> -			"tc3589x-keypad", keypad);
> +	error = request_threaded_irq(irq, NULL, tc3589x_keypad_irq,
> +				     plat->irqtype | IRQF_ONESHOT,
> +				     "tc3589x-keypad", keypad);
>  	if (error < 0) {
>  		dev_err(&pdev->dev,
>  				"Could not allocate irq %d,error %d\n",
> -- 
> 1.9.1
> 

-- 
Dmitry
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