linux-kernel - Re: [PATCH 02/20] regmap: Remove regmap_bulk

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Message-ID: <20150812104436.GA19600@pengutronix.de>
Date:	Wed, 12 Aug 2015 12:44:36 +0200
From:	Markus Pargmann <mpa@...gutronix.de>
To:	Mark Brown <broonie@...nel.org>
Cc:	Jonathan Cameron <jic23@...nel.org>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, kernel@...gutronix.de,
	Stephen Boyd <sboyd@...eaurora.org>
Subject: Re: [PATCH 02/20] regmap: Remove regmap_bulk_write 64bit support

On Wed, Aug 12, 2015 at 11:25:50AM +0100, Mark Brown wrote:
> On Wed, Aug 12, 2015 at 12:12:27PM +0200, Markus Pargmann wrote:
> > Regmap does not support 64bit. The ival that is used to write the 64bit
> > data to, is unsigned int and can't hold 64bit. _regmap_write also just
> > supports unsigend int.
> 
> What makes you say that unsigned int can't hold 64 bit?  An architecture
> can have 64 bit ints if it likes.

I wasn't aware that any 64 bit architecture actually has unsigned ints
that are 64 bit in size. So wouldn't at least on x86_64 this would lead
to a compiler warning as unsigned int is 4 byte and u64 8 bytes?

Best Regards,

Markus

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