linux-kernel - RE: [patch v3] drivers/platform/x86: introduce support for Mellanox hotplug driver

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Message-ID: <AM5PR0501MB2097FAB9ED7C7B465A24CD64A2D60@AM5PR0501MB2097.eurprd05.prod.outlook.com>
Date:   Sun, 23 Oct 2016 06:14:53 +0000
From:   Vadim Pasternak <vadimp@...lanox.com>
To:     Darren Hart <dvhart@...radead.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "geert@...ux-m68k.org" <geert@...ux-m68k.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "kvalo@...eaurora.org" <kvalo@...eaurora.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "linux@...ck-us.net" <linux@...ck-us.net>,
        "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 v3] drivers/platform/x86: introduce support for Mellanox
 hotplug driver



> -----Original Message-----
> From: Darren Hart [mailto:dvhart@...radead.org]
> Sent: Friday, October 21, 2016 9:42 PM
> To: Vadim Pasternak <vadimp@...lanox.com>
> Cc: davem@...emloft.net; geert@...ux-m68k.org; akpm@...ux-
> foundation.org; kvalo@...eaurora.org; gregkh@...uxfoundation.org;
> mchehab@...nel.org; linux@...ck-us.net; linux-kernel@...r.kernel.org;
> platform-driver-x86@...r.kernel.org; jiri@...nulli.us
> Subject: Re: [patch v3] drivers/platform/x86: introduce support for Mellanox
> hotplug driver
> 
> On Thu, Oct 20, 2016 at 04:28:01PM +0000, vadimp@...lanox.com wrote:
> > From: Vadim Pasternak <vadimp@...lanox.com>
> >
> > Enable system support for the Mellanox Technologies hotplug platform
> > driver, which provides support for the next Mellanox basic systems:
> > "msx6710", "msx6720", "msb7700", "msn2700", "msx1410", "msn2410",
> > "msb7800", "msn2740", "msn2100" and also various number of derivative
> > systems from the above basic types.
> > This driver handles hot-plug events for the power suppliers, power
> > cables and fans for the above systems.
> >
> > The Kconfig currently controlling compilation of this code is:
> > driver/platform/x86:config MLX_CPLD_PLATFORM
> >                        tristate "Mellanox platform hotplug driver support"
> >
> > Signed-off-by: Vadim Pasternak <vadimp@...lanox.com>
> > ---
> > v1->v2:
> >  Comments pointed out by Darren:
> >  - remove whitespaces in config;
> >  - remove redundant includes for header files;
> >  - fix comments styling;
> >  - fix register value assignment in mlxcpld_hotplug_attr_show;
> >  - mlxcpld_hotplug_attr_init - use local aliases to reduce line
> > length;
> >  - Add fields description in the struct mlxcpld_hotplug_device;
> > v2->v3:
> >  Comments pointed out by Darren:
> >   - Fix structures and enum comments in mlxcpld-hotplug.c according to
> >     Documentation/kernel-documentation.rst guideline;
> >   - Assign and mask aggregation status in mlxcpld_hotplug_work_handler on
> >     the same line.
> >   - Refactor mlxcpld_hotplug_work_handler. Make common helper routine for
> >     each attribute type.
> >   - Produce error message in case signal is not expected.
> >   - Fix header file according to Documentation/kernel-documentation.rst
> >     guideline;
> 
> >  Fix added by Vadim:
> > 	Fix re-scheduling flow for possibly missed signals. By mistake it
> > 	was coupled with FAN.
> 
> Thanks Vadim. Merged to for-next for 4.10.
> 
> Also for 4.10, it would be good to move mlx-platform out of arch/x86/platform
> to
> drivers/platform/x86 as it isn't an architectural driver. Would you be able to
> prepare the patch?

Hi Darren,

Thank you very much for all your reviews.

Sure, I'll prepare the patch.

Should it be submitted in two different patches (remove in git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git; and add in
git://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git)?
Or in one patch, in  git://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git?

Thanks,
Vadim.

> 
> Thanks,
> 
> --
> Darren Hart
> Intel Open Source Technology Center