linux-kernel - Re: [PATCH] mfd: jz4740-adc: Init mask cache in generic IRQ chip

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Date:	Mon, 24 Aug 2015 15:01:31 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Matt Redfearn <matt.redfearn@...tec.com>
Cc:	sameo@...ux.intel.com, lars@...afoo.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: jz4740-adc: Init mask cache in generic IRQ chip

On Thu, 20 Aug 2015, Matt Redfearn wrote:

> The mask cache must be initialised in the generic IRQ chip,
> otherwise enabling one channel will actually enable all
> channels when the empty mask cache is written.
> 
> Signed-off-by: Matt Redfearn <matt.redfearn@...tec.com>
> ---
>  drivers/mfd/jz4740-adc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Applied, thanks.

> diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
> index ae2ad8ad0e2f..e8699c0cdae6 100644
> --- a/drivers/mfd/jz4740-adc.c
> +++ b/drivers/mfd/jz4740-adc.c
> @@ -276,7 +276,8 @@ static int jz4740_adc_probe(struct platform_device *pdev)
>  	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
>  	ct->chip.irq_ack = irq_gc_ack_set_bit;
>  
> -	irq_setup_generic_chip(gc, IRQ_MSK(5), 0, 0, IRQ_NOPROBE | IRQ_LEVEL);
> +	irq_setup_generic_chip(gc, IRQ_MSK(5), IRQ_GC_INIT_MASK_CACHE, 0,
> +				IRQ_NOPROBE | IRQ_LEVEL);
>  
>  	adc->gc = gc;
>  

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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