linux-kernel - Re: [PATCH] spi: add spi_sync_single_transfer wrapper for single spi

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Message-ID: <20160617113453.GG26099@sirena.org.uk>
Date:	Fri, 17 Jun 2016 12:34:53 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Andi Shyti <andi.shyti@...sung.com>
Cc:	Lars-Peter Clausen <lars@...afoo.de>, linux-spi@...r.kernel.org,
	linux-kernel@...r.kernel.org, Andi Shyti <andi@...zian.org>
Subject: Re: [PATCH] spi: add spi_sync_single_transfer wrapper for single
 spi_transfer

On Fri, Jun 17, 2016 at 09:43:11AM +0900, Andi Shyti wrote:

> > > The spi_sync_single_transfer function calls spi_sync_transfer
> > > with a single spi_transfer element, instead of an array.

> > So, what's the advantage of using this as opposed to calling
> > spi_sync_transfer with a 1 for the number of transfers?

> Not much, but it keeps the code a bit nicer to read for those
> using spi_sync_transfer with only one spi_transfer. Besides it's
> also more understandable what the function itself does and there
> would not be any need to jump into the spi_sync_transfer to check
> what the number '1' is needed for (for example it's not a boolean 
> 'true' value).

I really don't think this has been a big source of confusion for people.

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