linux-kernel - Re: [PATCH 0/7] gpio: omap: fixes and improvements

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Message-ID: <20150821081342.GL4215@atomide.com>
Date:	Fri, 21 Aug 2015 01:13:43 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Grygorii Strashko <grygorii.strashko@...com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>, ssantosh@...nel.org,
	Kevin Hilman <khilman@...prootsystems.com>,
	Javier Martinez Canillas <javier@...hile0.org>,
	linux-omap@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] gpio: omap: fixes and improvements

* Tony Lindgren <tony@...mide.com> [150818 23:42]:
> Hi,
> 
> * Grygorii Strashko <grygorii.strashko@...com> [150818 04:14]:
> > Hi,
> > 
> > This patch series contains set of trivial fixes and improvements, and also
> > patches which fixes wrong APIs usage in atomic context as for -RT as for
> > non-RT kernel. The final goal of this series is to make TI OMAP GPIO
> > driver compatible with -RT kernel as much as possible.
> > 
> > Patch 1-4: trivial fixes and improvements
> > Patch 5: fixes wrong CLK clk_prepare/unprepare APIs usage in atomic contexet
> > Patch 6(rfc): required to be compatible with -RT kernel, because PM runtime
> >  can't be used in atimic context on -RT.
> > Patch 7(rfc): This patch converts TI OMAP GPIO driver to use generic irq
> >  handler instead of chained IRQ handler. This way OMAP GPIO driver will be
> >  compatible with RT kernel where it will be forced thread IRQ handler
> >  while in non-RT kernel it still will be executed in HW IRQ context.
> 
> Based on quick testing this series breaks at least core off idle for omap3.
> You probably should add a beagle xm to your test devices so you can
> properly test PM features.

Sorry I take that back, after trying to figure out which patch breaks PM
I noticed I had some other patches applied also. Looks like PM works just
fine with this series for me, so please feel free to add:

Tested-by: Tony Lindgren <tony@...mide.com>

Note that I have not been able to test this with gpio button as my
boards are in a rack. You may want to do some gpio button tests to
make sure things wake up properly from off idle if you can get hold
of a beagle xm. I posted some instructions how to test earlier today
for Kishon in the "[PATCH v2 00/16] omap_hsmmc: regulator usage
cleanup and fixes" thread.

Regards,

Tony
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