linux-kernel - Re: [PATCH v2 1/3] add sysfs document for fpga bridges

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Message-ID: <20141029082544.GB22891@amd>
Date:	Wed, 29 Oct 2014 09:25:44 +0100
From:	Pavel Machek <pavel@...x.de>
To:	atull <atull@...nsource.altera.com>
Cc:	jgunthorpe@...idianresearch.com, hpa@...or.com, monstr@...str.eu,
	michal.simek@...inx.com, rdunlap@...radead.org,
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	robh+dt@...nel.org, grant.likely@...aro.org, iws@...o.caltech.edu,
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	dinguyen@...nsource.altera.com, yvanderv@...nsource.altera.com
Subject: Re: [PATCH v2 1/3] add sysfs document for fpga bridges

On Fri 2014-10-24 10:11:26, atull wrote:
> On Fri, 24 Oct 2014, Pavel Machek wrote:
> 
> > On Thu 2014-10-23 18:51:05, atull@...nsource.altera.com wrote:
> > > From: Alan Tull <atull@...nsource.altera.com>
> > > 
> > > Add sysfs document for fpga bridges.
> > > 
> > > --- /dev/null
> > > +++ b/Documentation/ABI/testing/sysfs-class-fpga-bridge
> > > @@ -0,0 +1,5 @@
> > > +What:		/sys/class/fpga-bridge/<bridge>/enable
> > > +Date:		October 2014
> > > +KernelVersion:	3.18
> > > +Contact:	Alan Tull <atull@...nsource.altera.com>
> > > +Description:	Enable bridge.  Write 1 to bring bridge out of reset.
> > 
> > Specify, what happens when 0 is written there?
> 
> Yes, I will add:  'Write 0 has no effect.'

Definitely add it, then. The way it is written, I'd expect 0 to put
bridge into reset.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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