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

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Date:	Tue, 30 Nov 2010 10:44:07 +0100
From:	Mattias Wallin <mattias.wallin@...ricsson.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	"linux-kernel@...r.kernel.org" <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,

On 11/26/2010 04:43 PM, Samuel Ortiz wrote:
> 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.
Sorry.
> 
> 
>> 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.
Ok, I'll put this in a seperate patch.
> 
> The rest looks just fine.
> 
> Cheers,
> Samuel.
> 
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