linux-kernel - RE: [patch v9 0/4] drivers/platform: Replace module x86/mlxcpld-hotplug with mellanox/mlxreg-hotplug

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Message-ID: <AM4PR05MB33304E4A2C7CC588371EF0EAA2E30@AM4PR05MB3330.eurprd05.prod.outlook.com>
Date:   Tue, 23 Jan 2018 18:04:37 +0000
From:   Vadim Pasternak <vadimp@...lanox.com>
To:     Darren Hart <dvhart@...radead.org>
CC:     "andy.shevchenko@...il.com" <andy.shevchenko@...il.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "jiri@...nulli.us" <jiri@...nulli.us>
Subject: RE: [patch v9 0/4] drivers/platform: Replace module
 x86/mlxcpld-hotplug with mellanox/mlxreg-hotplug



> -----Original Message-----
> From: Darren Hart [mailto:dvhart@...radead.org]
> Sent: Tuesday, January 23, 2018 6:13 AM
> To: Vadim Pasternak <vadimp@...lanox.com>
> Cc: andy.shevchenko@...il.com; gregkh@...uxfoundation.org; linux-
> kernel@...r.kernel.org; platform-driver-x86@...r.kernel.org; jiri@...nulli.us
> Subject: Re: [patch v9 0/4] drivers/platform: Replace module x86/mlxcpld-
> hotplug with mellanox/mlxreg-hotplug
> 
> On Wed, Jan 17, 2018 at 06:21:52PM +0000, Vadim Pasternak wrote:
> > The patchset:
> >  - replaces modules include/linux/platform_data/mlxcpld-hotplug.h and
> >    drivers/platform/x86/mlxcpld-hotplug.c with the modules
> >    include/linux/platform_data/mlxreg.h and
> >    drivers/platform/mellanox/mlxreg-hotplug.c;
> >    relevant Makefile and Kconfig are updated;
> >  - modifies Mellanox hotplug driver for making it architecture
> >    independent. Drivers has been tested for x86 and ARM based systems.
> >  - includes code cleanup;
> >  - introduces regmap interface for mlxreg-hotplug driver to allow hotplug
> >    event functionality over programmable devices logic, when these devices
> >    can be attached to different interfaces types, like I2C, LPC, SPI;
> >    driver drivers/platform/x86/mlx-platform.c is updated according to new
> >    interface.
> 
> This series is still not dividing up changes into small functional chunks. It "ping
> pongs" (adding then later removing code), and makes it difficult to review
> functional changes by surrounding them with non-functional transformations. As
> I've attempted to break this apart myself, I've discovered a few issues with the
> code - see the responses to the individual patches.
> 
> You can find my broken up version here:
> http://git.infradead.org/linux-platform-drivers-
> x86.git/shortlog/refs/heads/review-dvhart-mellanox-v10
> 
> In particular, please see:
> http://git.infradead.org/linux-platform-drivers-
> x86.git/commit/4f0057fc3da29c04e2cefca9dc5b17577b3e4988
> 
> Vadim, please respond to my questions re the individual patches, and I'll
> increment the patches in the above branch before pushing this up to testing.
> 

Hi Darren,

Thank you for your reviews.

I wanted to take update from your update git, to align the patches with series
you pushed to review-dvhart-mellanox-v10.
But I have some issue with 
cda61cd592ebc9534b9786c337b124a86a6e303f hash:
git remote update
Fetching origin
remote: error: inflate: data stream error (incorrect header check)
remote: error: unable to unpack cda61cd592ebc9534b9786c337b124a86a6e303f header
remote: fatal: loose object cda61cd592ebc9534b9786c337b124a86a6e303f (stored in ./objects/cd/a61cd592ebc9534b9786c337b124a86a6e303f) is corrupt
remote: aborting due to possible repository corruption on the remote side.
fatal: protocol error: bad pack header
error: Could not fetch origin

Same in case I just clone git anew.

I am about to re-send the series started from the patch 2.
I currently dropped the changes related to removing dev_err (from FIXME
platform/mellanox: Remove redundant dev_err messa).
I also added one extra patch between
platform/mellanox: mlxreg-hotplug: Modify to use a 
and
platform/mellanox: mlxreg-hotplug: Enable building

And I'll not resend 
platform/x86: mlx-platform: Allow compilation for 32
since it has been moved from the series  as a separate patch.

> --
> Darren Hart
> VMware Open Source Technology Center