linux-kernel - Re: 4.4, 4.6: camera and unlock buttons produce tons of interrupts (was Re: N900 sleep mode)

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Message-ID: <20160407230150.GA16552@amd>
Date:	Fri, 8 Apr 2016 01:01:50 +0200
From:	Pavel Machek <pavel@....cz>
To:	Tony Lindgren <tony@...mide.com>
Cc:	pali.rohar@...il.com, sre@...nel.org,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, khilman@...nel.org,
	aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
	patrikbachan@...il.com, serge@...lyn.com
Subject: Re: 4.4, 4.6: camera and unlock buttons produce tons of interrupts
 (was Re: N900 sleep mode)

Hi!

> > gzipped config is attached.
> > 
> > Note that I'm still using NOLO. I enabled the sleep, then went to
> > runlevel 1. LEDs still stay on, 55mA power consumption. That was with
> > 1 in off_mode.
> 
> Nothing idling for me with your .config.. And it seems slower to boot
> compared to omap2plus_defconfig? Maybe because of the extra GPIO
> interrupts?

Extra interrupts only happen when enable_off_mode is 1, so that should
not be an issue during boot.

> Looks like you have 117 additional entries in .config enabled compared
> to omap2plus_defconfig. Maybe go back to omap2plus_defconfig with minimal
> changes and verify it idles properly first?
> 
> I'm suspecting it's some driver(s) you have enabled causing the
> issue.

I guess so. Do you (or anyone else) have minimum non-modular config
for N900 that boots with video? Could I get lsmod from your system?
(Yes, I still have nightmares from getting .config that works).

Thanks and best regards,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html