linux-kernel - Re: [PATCH] MFD: ab8500 chip id exported to sysfs

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Date:	Fri, 26 Nov 2010 16:43:04 +0100
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Mattias Wallin <mattias.wallin@...ricsson.com>
Cc:	linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Ludovic Barre <ludovic.barre@...ricsson.com>
Subject: Re: [PATCH] MFD: ab8500 chip id exported to sysfs

Hi Mattias,

On Fri, Nov 26, 2010 at 01:05:25PM +0100, Mattias Wallin wrote:
> This patch adds a file into sysfs for reading out chip id.
> It have been requested for modem silent reboot.
> 
> Change-Id: I8e2c10e740a90ab210e023df4214b422c01f2efb
I suppose this is some internal ID ? Please remove it from the Changelog.


> Signed-off-by: Mattias Wallin <mattias.wallin@...ricsson.com>
> Signed-off-by: Ludovic Barre <ludovic.barre@...ricsson.com>
> ---
>  drivers/mfd/ab8500-core.c |   27 ++++++++++++++++++++++++++-
>  1 files changed, 26 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
> index e64569e..c59e832 100644
> --- a/drivers/mfd/ab8500-core.c
> +++ b/drivers/mfd/ab8500-core.c
> @@ -98,7 +98,7 @@ static int ab8500_get_chip_id(struct device *dev)
>  	if (!dev)
>  		return -EINVAL;
>  	ab8500 = dev_get_drvdata(dev->parent);
> -	return (int)ab8500->chip_id;
> +	return ab8500 ? (int)ab8500->chip_id : -EINVAL;
Here again, you're squeezing some potential bug fix into this patch.

The rest looks just fine.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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