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

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Message-Id: <20120520050033.1D3DD3E03B8@localhost>
Date:	Sat, 19 May 2012 23:00:33 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Andrew Lunn <andrew@...n.ch>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Shubhrajyoti D <shubhrajyoti@...com>,
	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 Tue, 15 May 2012 21:58:01 +0200, Andrew Lunn <andrew@...n.ch> wrote:
> On Thu, May 10, 2012 at 09:24:55PM -0600, Grant Likely wrote:
> > 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).
> 
> Hi Grant
> 
> Is this going to appear in linux-next soon? Can i depend on having
> this patch for 3.5?

It's pushed out now.

g.

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