linux-kernel - Re: [patch v1] drivers/platform/x86: introduce support for Mellanox hotplug driver

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Message-ID: <20160922134312.GA30274@kroah.com>
Date:   Thu, 22 Sep 2016 15:43:12 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Vadim Pasternak <vadimp@...lanox.com>
Cc:     "dvhart@...radead.org" <dvhart@...radead.org>,
        "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>,
        "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 v1] drivers/platform/x86: introduce support for Mellanox
 hotplug driver

On Thu, Sep 22, 2016 at 01:01:46PM +0000, Vadim Pasternak wrote:
> 
> 
> > -----Original Message-----
> > From: Greg KH [mailto:gregkh@...uxfoundation.org]
> > Sent: Thursday, September 22, 2016 3:31 PM
> > To: Vadim Pasternak <vadimp@...lanox.com>
> > Cc: dvhart@...radead.org; davem@...emloft.net; geert@...ux-m68k.org;
> > akpm@...ux-foundation.org; kvalo@...eaurora.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 v1] drivers/platform/x86: introduce support for Mellanox
> > hotplug driver
> > 
> > On Thu, Sep 22, 2016 at 01:14:27PM +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>
> > > ---
> > >  MAINTAINERS                                   |   7 +
> > >  drivers/platform/x86/Kconfig                  |  10 +
> > >  drivers/platform/x86/Makefile                 |   1 +
> > >  drivers/platform/x86/mlxcpld-hotplug.c        | 543
> > ++++++++++++++++++++++++++
> > >  include/linux/platform_data/mlxcpld-hotplug.h |  90 +++++
> > 
> > Why do you need a platform_data .h file for a stand-alone driver?
> > 
> 
> I have another module mlx-platform, which is reviewed now (I also got
> a number feedbacks from you on this matter).  I want to activate
> mlxcpld-hotplug from this module. 

Ah.  Hm, I thought "platform_data" was depreciated.  Really, there is no
way to put this in acpi or device tree?  This feels so 1990's...

thanks,

greg k-h