linux-kernel - Re: [PATCH 2/2] regmap: spi: Support asynchronous I/O for SPI

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Message-ID: <20130129013858.GA4748@opensource.wolfsonmicro.com>
Date:	Tue, 29 Jan 2013 09:39:01 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] regmap: spi: Support asynchronous I/O for SPI

On Mon, Jan 28, 2013 at 11:38:50AM -0800, Stephen Boyd wrote:
> On 01/27/13 06:12, Mark Brown wrote:

> > +static int regmap_spi_async_write(void *context,
> > +				  const void *reg, size_t reg_len,
> > +				  const void *val, size_t val_len,
> > +				  struct regmap_async *a)
> > +{
> > +	struct regmap_async_spi *async = (void *)a;

> Can you use container_of() here?

We could but I tend not to if the interface strictly requires that the
pointers be type punnable.

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