linux-kernel - Re: [PATCH v6 0/9] samsung: pmu: split up SoC specific PMU data

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Date:	Fri, 18 Dec 2015 09:14:29 +0530
From:	"pankaj.dubey" <pankaj.dubey@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org
Cc:	kgene.kim@...sung.com, thomas.ab@...sung.com,
	amitdanielk@...il.com, olof@...om.net, khilman@...aro.org,
	arnd@...db.de
Subject: Re: [PATCH v6 0/9] samsung: pmu: split up SoC specific PMU data

Hi Krzysztof,

On Thursday 17 December 2015 11:01 AM, Krzysztof Kozlowski wrote:
> On 17.11.2015 15:05, Pankaj Dubey wrote:
>> In this series I am splitting up SoC specific PMU configuration data into
>> mach-exynos folder itself, before moving all of them under
>> drivers/soc/samsung/. Also instead of making all changes in single patch it
>> has been broken into SoC specific patches to avoid large size of patch.
>> With this approach there will not be unwanted big churns just after
>> adding exynos-pmu under drivers/soc/samsung.
>>
>> All these patches are just refactoring to keep minimal changes while moving
>> exynos-pmu driver under drivers/soc/samsung/. Support for exynos7 PMU can
>> be added on top of it, in such a manner that for ARM64 build, ARM related
>> SoC's PMU will not get compiled and thus unnecessary increasing kernel image size.
>>
>> These patches have been prepared on top of Kukjin Kim's for-next merged with
>> driver-samsung and on top of
>> cherry-picked change from [1].
>>
>> 1: ARM: EXYNOS: Constify local exynos_pmu_data structure
>>    https://lkml.org/lkml/2015/10/28/917
>>
>> For testing entire patchset on Peach-Pi (Exynos5880) based chromebook for boot
>> and S2R functionality.
>>
>> Tested-by: Pankaj Dubey <pankaj.dubey@...sung.com>
>>
>> For testing entire patchset on on Trats2 (Exynos4412, S2R, reboot, poweroff)
>> and Odroid XU3 (Exynos5422, reboot, poweroff).
>>
>> Tested-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>>
>> Changes since v5:
>>  - Removed extra blank line from patch 5/9 and 6/9.
>>  - Modified soc/samsung/Kconfig for config EXNOS_PMU. Added depends on ARM.
>>
>> Changes since v4:
>>  - In v3 I missed to give -M flag to detect rename, which made patches hard
>>    to review, so resubmitting patches with rename detector flag.
>>  - Addressed review comments from Krzysztof.
>>
>> Changes since v3:
>>  - Keeping intact copyright dates in existing header files.
>>  - Addressed review comments from Krzysztof for v3.
>>  - Removing static inline function from exynos-pmu.h and
>>    keeping them in PMU driver.
>>  - Added new patch (2/9) for fixing potential null pointer reference in
>>    exynos_sys_powerdown_conf.
>>  - Added new patch (8/9) for rearranging static and non-static function for
>>    better readability.
>>
>> Changes since v2:
>>  - Removed Amit's Samsung id as it's no more valid.
>>  - Rebased on latest kgene tree.
>>  - Removed redundant code from regs-pmu.h
>>
>> Pankaj Dubey (9):
>>   ARM: EXYNOS: removing redundant code from regs-pmu.h
>>   ARM: EXYNOS: Fix potential NULL pointer access in
>>     exynos_sys_powerdown_conf
>>   ARM: EXYNOS: Move pmu specific headers under "linux/soc/samsung"
>>   ARM: EXYNOS: split up exynos3250 SoC specific PMU data
>>   ARM: EXYNOS: split up exynos4 SoC specific PMU data
>>   ARM: EXYNOS: split up exynos5250 SoC specific PMU data
>>   ARM: EXYNOS: split up exynos5420 SoC specific PMU data
>>   ARM: EXYNOS: rearrange static and non-static functions of PMU driver
>>   drivers: soc: Add support for Exynos PMU driver
>>
> 
> I tried to apply this to my branch:
> next/stuff-late-not-split-per-branch
> https://git.kernel.org/cgit/linux/kernel/git/krzk/linux.git/log/?h=next/stuff-late-not-split-per-branch
> 
> Unfortunately it fails on:
> error: patch failed: arch/arm/mach-exynos/pmu.c:17
> error: arch/arm/mach-exynos/pmu.c: patch does not apply
> Patch failed at 0001 ARM: EXYNOS: Move pmu specific headers under
> "linux/soc/samsung"
> 
> because of syscon-reboot handlers (Alim's work).
> 
> I think I have all the dependencies already in my
> "next/stuff-late-not-split-per-branch".
> If you want to proceed now, can you rebase on top of it? Otherwise we
> could wait and rebase later (after v4.5-rc1).
> 
> 

Thanks for looking into this.

I have just posted v7 of this series after rebasing on
"next/stuff-late-not-split-per-branch". Please have a look and if all
OK, include v7 in your branch, and lets try to get this in for v4.5. For
some reason if does not go, I am OK to wait for next cycle.


Thanks,
Pankaj Dubey

> P.S. Please note that "next/stuff-late-not-split-per-branch" is not
> included in linux-next because I am not sure if I will be able to push
> it out soon.
> 
> 
> Best regards,
> Krzysztof
> 
> 
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