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Date:   Mon, 23 Jan 2017 15:40:31 +0100
From:   Pavel Machek <pavel@....cz>
To:     Guenter Roeck <linux@...ck-us.net>
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, tony@...mide.com, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com,
        fabio.estevam@....com, rui.zhang@...el.com
Subject: Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900

On Mon 2017-01-23 06:31:31, Guenter Roeck wrote:
> On 01/23/2017 06:19 AM, Pavel Machek wrote:
> >Hi!
> >
> >>It seems that battery driver stopped working on N900 between -rc4 and
> >>-rc5.
> >
> >pavel@amd:/data/l/linux-n900$ git bisect log
> ># bad: [41f283973653dc44af47585fa79fb6da6ffdc2e2] Merge
> >/data//l/clean-cg into mini-v4.10
> ># good: [4f8d9925eb1de1ec1c4183164f1bc7b01f5ae185] It seems mainline
> >-rc4 did have a fix for the sound issue. Use that one.
> >git bisect start 'mini-v4.10'
> >'4f8d9925eb1de1ec1c4183164f1bc7b01f5ae185'
> ># good: [e90665a5d38b17fdbe484a85fbba917a7006522d] Merge tag
> >'ceph-for-4.10-rc5' of git://github.com/ceph/ceph-client
> >git bisect good e90665a5d38b17fdbe484a85fbba917a7006522d
> ># good: [83fd57a740bb19286959b3085eb93532f3e7ef2c] Merge tag
> >'powerpc-4.10-2' of
> >git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
> >git bisect good 83fd57a740bb19286959b3085eb93532f3e7ef2c
> ># good: [c497f8d17246720afe680ea1a8fa6e48e75af852] Merge tag
> >'usb-4.10-rc5' of
> >git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
> >git bisect good c497f8d17246720afe680ea1a8fa6e48e75af852
> ># bad: [bb6c01c2dde67b165cf7c808b0f00677b6f94b96] Merge branch
> >'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
> >git bisect bad bb6c01c2dde67b165cf7c808b0f00677b6f94b96
> ># good: [18591add41ec9558ce0e32ef88626c18cc70c686] thermal: rockchip:
> >handle set_trips without the trip points
> >git bisect good 18591add41ec9558ce0e32ef88626c18cc70c686
> ># bad: [f53345e8cf027d03187b9417f1f8883c516e1a5b] thermal: core: move
> >tz->device.groups cleanup to thermal_release
> >git bisect bad f53345e8cf027d03187b9417f1f8883c516e1a5b
> ># bad: [7611fb68062f8d7f416f3272894d1edf7bbff29c] thermal:
> >thermal_hwmon: Convert to hwmon_device_register_with_info()
> >git bisect bad 7611fb68062f8d7f416f3272894d1edf7bbff29c
> ># first bad commit: [7611fb68062f8d7f416f3272894d1edf7bbff29c]
> >thermal: thermal_hwmon: Convert to hwmon_device_register_with_info()
> >pavel@amd:/data/l/linux-n900$
> >
> >pavel@amd:/data/l/linux-n900$ git bisect log
> ># bad: [41f283973653dc44af47585fa79fb6da6ffdc2e2] Merge
> >/data//l/clean-cg into mini-v4.10
> ># good: [4f8d9925eb1de1ec1c4183164f1bc7b01f5ae185] It seems mainline
> >-rc4 did have a fix for the sound issue. Use that one.
> >git bisect start 'mini-v4.10'
> >'4f8d9925eb1de1ec1c4183164f1bc7b01f5ae185'
> ># good: [e90665a5d38b17fdbe484a85fbba917a7006522d] Merge tag
> >'ceph-for-4.10-rc5' of git://github.com/ceph/ceph-client
> >git bisect good e90665a5d38b17fdbe484a85fbba917a7006522d
> ># good: [83fd57a740bb19286959b3085eb93532f3e7ef2c] Merge tag
> >'powerpc-4.10-2' of
> >git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
> >git bisect good 83fd57a740bb19286959b3085eb93532f3e7ef2c
> ># good: [c497f8d17246720afe680ea1a8fa6e48e75af852] Merge tag
> >'usb-4.10-rc5' of
> >git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
> >git bisect good c497f8d17246720afe680ea1a8fa6e48e75af852
> ># bad: [bb6c01c2dde67b165cf7c808b0f00677b6f94b96] Merge branch
> >'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
> >git bisect bad bb6c01c2dde67b165cf7c808b0f00677b6f94b96
> ># good: [18591add41ec9558ce0e32ef88626c18cc70c686] thermal: rockchip:
> >handle set_trips without the trip points
> >git bisect good 18591add41ec9558ce0e32ef88626c18cc70c686
> ># bad: [f53345e8cf027d03187b9417f1f8883c516e1a5b] thermal: core: move
> >tz->device.groups cleanup to thermal_release
> >git bisect bad f53345e8cf027d03187b9417f1f8883c516e1a5b
> ># bad: [7611fb68062f8d7f416f3272894d1edf7bbff29c] thermal:
> >thermal_hwmon: Convert to hwmon_device_register_with_info()
> >git bisect bad 7611fb68062f8d7f416f3272894d1edf7bbff29c
> ># first bad commit: [7611fb68062f8d7f416f3272894d1edf7bbff29c]
> >thermal: thermal_hwmon: Convert to hwmon_device_register_with_info()
> >pavel@amd:/data/l/linux-n900$
> >
> >7611fb68062f8d7f416f3272894d1edf7bbff29c is the first bad commit
> >commit 7611fb68062f8d7f416f3272894d1edf7bbff29c
> >Author: Fabio Estevam <fabio.estevam@....com>
> >Date:   Tue Dec 27 15:31:49 2016 -0200
> >
> >    thermal: thermal_hwmon: Convert to
> >    hwmon_device_register_with_info()
> >
> >    Booting Linux on a mx6q based board leads to the following
> >    warning:
> >
> >    (NULL device *): hwmon_device_register() is deprecated. Please
> >    convert the
> >        driver to use hwmon_device_register_with_info().
> >
> >    ,so do as suggested.
> >
> >    Also, this results in the core taking care of creating the 'name'
> >        attribute, so drop the code doing that from the thermal
> >        driver.
> >
> > Suggested-by: Guenter Roeck <linux@...ck-us.net>
> > Signed-off-by: Fabio Estevam <fabio.estevam@....com>
> > Signed-off-by: Zhang Rui <rui.zhang@...el.com>
> >
> >:040000 040000 b3f6095ab53677277c2f9d75cb6430afb6825765
> >156a18e983a22b8ae43c7b312a4e1c63017f0e26 M	drivers
> >
> >I'll try to revert it on the top of v4.10-rc5 now... and yes, it fixes
> >the issue.
> >
> >Any idea what went wrong and how to fix that?
> >
> >Anyway as we are at -rc5 and this is warning fix that caused a
> >regression on different hardware... it should be reverted.
> >
> Agreed.
> 
> What exactly does "stopped working" mean ? That might help understanding
> what went wrong.

/sys files related to battery no longer appear. I beieve this has
something to do with it:

[    2.374877] of_get_named_gpiod_flags: parsed 'reset-gpios' property
of node '/ocp@...00000/spi@...98000/tsc2005@0[0]' - status (0)
[    2.375946] input: TSC2005 touchscreen as
/devices/platform/68000000.ocp/48098000.spi/spi_master/spi1/spi1.0/input/input5
[    2.392120] rx51-battery: probe of n900-battery failed with error
-22
[    2.399902] omap_hsmmc 4809c000.mmc: GPIO lookup for consumer cd

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

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