linux-kernel - Re: [PATCHv2 1/4] mfd: smsc: Add support for smsc gpio io/keypad driver

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Date:	Tue, 25 Sep 2012 23:31:07 +0530
From:	"Poddar, Sourav" <sourav.poddar@...com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	b-cousson@...com, balbi@...com, santosh.shilimkar@...com,
	sameo@...ux.intel.com
Subject: Re: [PATCHv2 1/4] mfd: smsc: Add support for smsc gpio io/keypad driver

Hi,

On Tue, Sep 25, 2012 at 11:22 PM, Mark Brown
<broonie@...nsource.wolfsonmicro.com> wrote:
> On Wed, Sep 05, 2012 at 05:06:04PM +0530, Sourav Poddar wrote:
>
>> +static struct regmap_config smsc_regmap_config = {
>> +             .reg_bits = 8,
>> +             .val_bits = 8,
>> +             .max_register = SMSC_MAX_REGISTER - 1;
>> +             .cache_type = REGCACHE_COMPRESSED,
>> +};
>
> That definition of max_register looks wrong - why are we subtracting 1
> from a macro called MAX_REGISTER to get it?
>
Yes, my bad.
Actually, I have define in .h file something like this..
#define SMSC_MAX_REG                                    (SMSC_VEN_ID_H
+ 1) where
SMSC_VEN_ID_H is the last register address which this chip supports.

I think I should directly assign max_address to SMSC_VEN_ID_H.   ?
+
+
> Indentation here is a bit odd too.
>
Will rectify.
>> +static int smsc_i2c_remove(struct i2c_client *i2c)
>> +{
>> +     return 0;
>> +}
>
> Remove empty functions.
Ok.
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