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Date:	Tue, 23 Dec 2014 09:26:49 +0800
From:	Aaron Lu <aaron.lu@...el.com>
To:	Lee Jones <lee.jones@...aro.org>, Zhang Rui <rui.zhang@...el.com>
CC:	Olof Johansson <olof@...om.net>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next <linux-next@...r.kernel.org>,
	Linux-pm mailing list <linux-pm@...r.kernel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	jg1.han@...sung.com
Subject: Re: [PATCH v6] Thermal: introduce INT3406 thermal driver

On 12/22/2014 05:53 PM, Lee Jones wrote:
> On Mon, 22 Dec 2014, Zhang Rui wrote:
> 
>> On Thu, 2014-12-11 at 16:38 +0800, Aaron Lu wrote:
>>> INT3406 ACPI device object resembles an ACPI video output device, but its
>>> _BCM is said to be deprecated and should not be used. So we will make
>>> use of the raw interface to do the actual cooling. Due to this, the
>>> backlight core has some modifications. Also, to re-use some of the ACPI
>>> video module's code, one function has been exported.
>>>
>>> Signed-off-by: Aaron Lu <aaron.lu@...el.com>
>>
>> Jingoo and Lee,
>>
>> are you okay with the changes in drivers/video/backlight/backlight.c and
>> include/linux/backlight.h?
> 
> NB: Jingoo still needs to review the crux of the patch.
> 
>>> ---
>>> v6: Fix an issue that wrongly set error path return value as reported
>>> by Olof Johansson.
>>>
>>>  drivers/acpi/video.c                              |  77 ++++----
>>>  drivers/thermal/Kconfig                           |  26 +--
>>>  drivers/thermal/int340x_thermal/Kconfig           |  41 ++++
>>>  drivers/thermal/int340x_thermal/Makefile          |   1 +
>>>  drivers/thermal/int340x_thermal/int3406_thermal.c | 229 ++++++++++++++++++++++
>>>  drivers/video/backlight/backlight.c               |  44 +++--
>>>  include/acpi/video.h                              |  20 ++
>>>  include/linux/backlight.h                         |   2 +
>>>  8 files changed, 366 insertions(+), 74 deletions(-)
>>>  create mode 100644 drivers/thermal/int340x_thermal/Kconfig
>>>  create mode 100644 drivers/thermal/int340x_thermal/int3406_thermal.c
> 
> I gather by the message at the top that you're looking for an Ack so
> this can be routed through another subsystem.  Not going to happen.
> 
> So you're on v6 already and a) no one has mentioned that introducing a
> new driver AND making core framework changes (in a different subsystem
> to boot) in one patch is bad and b) this is the first time you've
> Cc'ed the maintainers of the aforementioned subsystem?
> 
> Moving forward you should split this patch into component parts and
> resend -- only this time ensure you Cc all maintainers in the first
> instance, rather than as as afterthought.

OK, thanks for the suggestion.

> 
>>> -config INT340X_THERMAL
>>> -	tristate "ACPI INT340X thermal drivers"
>>> -	depends on X86 && ACPI
>>> -	select THERMAL_GOV_USER_SPACE
>>> -	select ACPI_THERMAL_REL
>>> -	select ACPI_FAN
> 
> This patch also relies on backlight as well, no?

Yes it does, will add it in next revision.

Regards,
Aaron

> 
> [...]
> 

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