linux-kernel - Re: [PATCH 3/3] mfd: Add I2C control support for S5M8751

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Message-ID: <20110623103502.GA21932@opensource.wolfsonmicro.com>
Date:	Thu, 23 Jun 2011 11:35:02 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Sangbeom Kim <sbkim73@...sung.com>
Cc:	sameo@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] mfd: Add I2C control support for S5M8751

On Thu, Jun 23, 2011 at 11:21:10AM +0900, Sangbeom Kim wrote:
> On Thu, Jun 23, 2011 at 10:29 AM +0900, Mark Brown wrote:

> > In that case you should definitely take a look at the regmap API I've
> > been posting.  It factors all the device I/O stuff out so you should be
> > able to just tell it that you have a device with n bit registers and n
> > bit values and it'll provide all the I/O functions you need.  I just
> > reposted it today, though it needs another round for some SPI stuff.

> OK, After reviewing your patch, I will apply  it.

Note that it's not actually in mainline yet, it's still being reviewed.

> > > > > +	*val = (uint8_t)ret;

> > > > Why is this case required?

> > > I want pass the read value by val

> > Sorry, typo - why is this *cast* required?

> Just want to make same type.

Usually unless there's a reason to do a cast it's better to let the
compiler figure things out as a cast can stop the toolchain identifying
real issues for you.
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