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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160411093023.GC11814@amd>
Date:	Mon, 11 Apr 2016 11:30:23 +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.
> 
> OK maybe it's just the extra driver probe time then.

Ok, I did try to minimize config differences. I'm still booting from
NOLO. Now I'm doing the tests from init=... boot. idlest1_core
blocking bits says 0042. But the LEDs still don't blink.

I made config with pretty minimal differences from defconfig (making
required drivers =y, lockdep off so that video works).

Do you think you could try with my config?

> # echo 255 > /sys/class/backlight/acx565akm/brightness
> 
> And then the following to blank for idle:
> 
> # echo 1 > /sys/devices/platform/omapfb/graphics/fb0/blank

Yes, I'm doing this, on console.

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