RE: [PATCH V9 0/2] media: i2c: Add support for DW9768 VCM

["Cao, Bingbu" <bingbu.cao@intel.com>]

Hi, Dongchun

I think it need rebase on linuxtv/master.

________________________
BRs,  
Bingbu Cao                          


From: Dongchun Zhu (朱东春) <Dongchun.Zhu@mediatek.com> 
Sent: Thursday, July 2, 2020 11:49 AM
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: linus.walleij@linaro.org; bgolaszewski@baylibre.com; mchehab@kernel.org; andriy.shevchenko@linux.intel.com; robh+dt@kernel.org; drinkcat@chromium.org; tfiga@chromium.org; Erin Lo (羅雅齡) <erin.lo@mediatek.com>; Louis Kuo (郭德寧) <louis.kuo@mediatek.com>; Sj Huang (黃信璋) <sj.huang@mediatek.com>; matthias.bgg@gmail.com; Cao, Bingbu <bingbu.cao@intel.com>; srv_heupstream <srv_heupstream@mediatek.com>; linux-mediatek@lists.infradead.org; linux-arm-kernel@lists.infradead.org; linux-media@vger.kernel.org; devicetree@vger.kernel.org; Shengnan Wang (王圣男) <shengnan.wang@mediatek.com>
Subject: RE: [PATCH V9 0/2] media: i2c: Add support for DW9768 VCM


Hi Sakari,

Sorry to bother you again, but I am so confused about the questions you raised.
I just synced mainline: 5.8-rc3 tarball from https://www.kernel.org/, on which I ran the git am <patch> command.
The patch-applying process shows no error.
-----------------8<-------------------
[mtk15013@mtkslt307 linux]$git apply --check media-i2c-Add-support-for-DW9768-VCM.patch
[mtk15013@mtkslt307 linux]$git am media-i2c-Add-support-for-DW9768-VCM.patch
Applying: media: dt-bindings: media: i2c: Document DW9768 bindings
Applying: media: i2c: dw9768: Add DW9768 VCM driver
-----------------8<-------------------

On the other hand, I also compared dongwoon,dw9768.yaml file with other media device dt-bindings(like imx219.yaml and ov8856.yaml).
It seems there are no apparent differences between them.
Especially, the sentence '# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)' shall be common.
I dunno why here dongwoon,dw9768.yaml reports trailing whitespace warnings while ov8856.yaml is silent.

For the patch failed on MAINTAINERS, I am still curious what's wrong.
In fact, I locally have run parse-maintainers.pl script to check MAINTAINERS file before submitting patch.
The result also reports no errors.
-----------------8<-------------------
[mtk15013@mtkslt307 linux]$perl scripts/parse-maintainers.pl
[mtk15013@mtkslt307 linux]$ls
-----------------8<-------------------

As to Base64 encoding, I checked each patch file again. They are all encoded in UTF-8.
As https://www.base64encode.org/ says, for an example, '77' in ASCII format would be changed to 'T' in Based64-encoded format.
This means there shall be messy code if we adpoting Based64-encoded format.
But I cannot see garbled messages in the current patches.

The DW9768 serials-patch is attached.
@Tomasz @Andy @Rob could anyone help try to see whether the patch can be cherry-picked on Linux master branch or not?
Patchwork link:
https://patchwork.kernel.org/cover/11633291/

Thanks,
Dongchun


-----Original Message-----
From: Sakari Ailus [mailto:sakari.ailus@linux.intel.com] 
Sent: Wednesday, July 01, 2020 9:44 PM
To: Dongchun Zhu (朱东春)
Cc: mailto:bgolaszewski@baylibre.com; mailto:mchehab@kernel.org; mailto:andriy.shevchenko@linux.intel.com; mailto:robh+dt@kernel.org; mailto:drinkcat@chromium.org; mailto:tfiga@chromium.org; Erin Lo (羅雅齡); Louis Kuo (郭德寧)
Subject: Re: [PATCH V9 0/2] media: i2c: Add support for DW9768 VCM

Hi Dongchun,

On Wed, Jul 01, 2020 at 12:14:48PM +0000, Dongchun Zhu (朱东春) wrote:
>  Hello Sakari,
> 
>  Thank you for your kindly review : -)
> 
>  For the trailing whitespaces, did you mean the message in the cover-letter(0/2 patch)?
>  I am a little confused about it. In fact, I can't tell the wrong places with my naked eye...
> 
>  For the conflict in MAINTAINERS vs. current media tree master, did you mean the file name(dongwoon,dw9768.yaml)?
>  Do we need to change dt-binding file name from dongwoon,dw9768.yaml to dw9768.yaml?

I mean trailing whitespaces. When applying the patch with git am, this is what you get:

-----------------8<-------------------
$ git am -s /tmp/patchset
Applying: media: dt-bindings: media: i2c: Document DW9768 bindings
.git/rebase-apply/patch:13: trailing whitespace.
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
.git/rebase-apply/patch:14: trailing whitespace.
# Copyright (c) 2020 MediaTek Inc.
.git/rebase-apply/patch:15: trailing whitespace.
%YAML 1.2
.git/rebase-apply/patch:16: trailing whitespace.
---
.git/rebase-apply/patch:17: trailing whitespace.
$id: http://devicetree.org/schemas/media/i2c/dongwoon,dw9768.yaml#
error: patch failed: MAINTAINERS:5215
error: MAINTAINERS: patch does not apply Patch failed at 0001 media: dt-bindings: media: i2c: Document DW9768 bindings
hint: Use 'git am --show-current-patch' to see the failed patch When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
-----------------8<-------------------

Also the patches seem to be base64 encoded, something I haven't seen before. That is likely unrelated though.

--
Regards,

Sakari Ailus

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