linux-kernel - Re: [PATCH v4 6/6] GPIO: pca953x.c: Add missing irq_mask_ack handler in struct irq

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Date:	Wed, 8 Jun 2011 11:01:39 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	David Jander <david@...tonic.nl>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 6/6] GPIO: pca953x.c: Add missing irq_mask_ack handler
 in struct irq_chip

On Wed, Jun 08, 2011 at 02:48:34PM +0200, David Jander wrote:
> Either .irq_mask_ack or .irq_ack need to be filled in, otherwise in
> kernel/irq/chip.c: mask_ack_irq() a non-initialized handler is called.
> 
> Signed-off-by: David Jander <david@...tonic.nl>

Does this matter anymore given that the driver no longer sets a handler?

g.

> ---
>  drivers/gpio/pca953x.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
> index dfed81f..b476c1c 100644
> --- a/drivers/gpio/pca953x.c
> +++ b/drivers/gpio/pca953x.c
> @@ -379,6 +379,7 @@ static int pca953x_irq_set_type(struct irq_data *d, unsigned int type)
>  static struct irq_chip pca953x_irq_chip = {
>  	.name			= "pca953x",
>  	.irq_mask		= pca953x_irq_mask,
> +	.irq_mask_ack		= pca953x_irq_mask,
>  	.irq_unmask		= pca953x_irq_unmask,
>  	.irq_bus_lock		= pca953x_irq_bus_lock,
>  	.irq_bus_sync_unlock	= pca953x_irq_bus_sync_unlock,
> -- 
> 1.7.4.1
> 
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