linux-kernel - Re: [PATCH fixes 1/2] mfd: max77693: Use proper regmap for handling MUIC interrupts

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Date:	Fri, 10 Oct 2014 17:46:29 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	stable@...r.kernel.org
Subject: Re: [PATCH fixes 1/2] mfd: max77693: Use proper regmap for handling
 MUIC interrupts

On 10/10/2014 05:22 PM, Krzysztof Kozlowski wrote:
> Interrupts coming from Maxim77693 MUIC block (MicroUSB Interface
> Controller) were not handled at all because wrong regmap was used for
> MUIC's regmap_irq_chip.
> 
> The MUIC component of Maxim 77693 uses different I2C address thus second
> regmap is created and used by max77693 extcon driver. The registers for
> MUIC interrupts are also in that block and should be handled by that
> second regmap.
> 
> However the regmap irq chip for MUIC was configured with default regmap
> which could not read MUIC registers.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: <stable@...r.kernel.org>
> Fixes: 342d669c1ee4 ("mfd: max77693: Handle IRQs using regmap")
> ---
>  drivers/mfd/max77693.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
> index 2277a11b6629..4b54da1ff7ab 100644
> --- a/drivers/mfd/max77693.c
> +++ b/drivers/mfd/max77693.c
> @@ -243,7 +243,7 @@ static int max77693_i2c_probe(struct i2c_client *i2c,
>  		goto err_irq_charger;
>  	}
>  
> -	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
> +	ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
>  				IRQF_ONESHOT | IRQF_SHARED |
>  				IRQF_TRIGGER_FALLING, 0,
>  				&max77693_muic_irq_chip,
> 

Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>

Thanks,
Chanwoo Choi
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