linux-kernel - Re: [PATCH RFC] spi: Dont call prepare/unprepare transfer if not populated

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Message-Id: <20120511032455.6BB853E04A6@localhost>
Date:	Thu, 10 May 2012 21:24:55 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Shubhrajyoti D <shubhrajyoti@...com>
Cc:	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, andrew@...n.ch
Subject: Re: [PATCH RFC] spi: Dont call prepare/unprepare transfer if not populated

On Thu, 10 May 2012 16:01:27 +0200, Linus Walleij <linus.walleij@...aro.org> wrote:
> On Thu, May 10, 2012 at 3:50 PM, Shubhrajyoti D <shubhrajyoti@...com> wrote:
> 
> > Currently the prepare/unprepare transfer are called unconditionally.
> > The assumption is that every driver using the spi core queue infrastructure
> > has to populate the prepare and unprepare functions. This encourages
> > drivers to populate empty functions to prevent crashing.
> > This patch prevents the call to prepare/unprepare if not populated.
> >
> > Cc: Linus Walleij <linus.walleij@...aro.org>
> > Signed-off-by: Shubhrajyoti D <shubhrajyoti@...com>
> 
> Great!
> Acked-by: Linus Walleij <linus.walleij@...aro.org>

Applied, thanks (after fixing extra whitespace defect).

g.

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