linux-kernel - Re: [patch v8 2/3] platform/mellanox: mlxreg-hotplug: allow driver for ARM architecture

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Date:   Tue, 16 Jan 2018 17:50:44 -0800
From:   Darren Hart <dvhart@...radead.org>
To:     Vadim Pasternak <vadimp@...lanox.com>
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 v8 2/3] platform/mellanox: mlxreg-hotplug: allow driver
 for ARM architecture

On Tue, Jan 16, 2018 at 08:06:33AM +0000, Vadim Pasternak wrote:
> 
> 
> > -----Original Message-----
> > From: Darren Hart [mailto:dvhart@...radead.org]
> > Sent: Tuesday, January 16, 2018 5:43 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 v8 2/3] platform/mellanox: mlxreg-hotplug: allow driver for
> > ARM architecture
> > 
> > On Thu, Jan 11, 2018 at 08:58:42AM +0000, Vadim Pasternak wrote:
> > > It allows driver to run on x86 and ARM architecture based systems.
> > > Also some unnecessary includes are removed.
> > 
> > Hi Vadim,
> > 
> > These changes are not all readily mapped to this description, nor to the
> > changelog below.
> > 
> > Only the kconfig change is obviously linked to building on ARM and not just x86.
> > 
> > Things like the removal of the dev_err messages and the relocation of the create
> > and destroy methods seem entirely unrelated to building on ARM.
> > 
> > I'd like to get this merged sooner rather than later as it has been lingering for
> > quite some time now - can you provide some more detail about how the
> > changes included in this patch are needed to make this driver build on ARM?
> 
> Yes. Right.
> Should I split it to two separate patches, one only with Kconfig changes and the
> second with text like:
> Remove some unnecessary includes;
> Remove dev_err message;
> Change filed bus to nr for consistency with kernel definitions;

This would be a better split, yes. Note that we need to document *why* it is an
unnecessary dev_err message. When you respin, please pull the X86_64 Kconfig
change from 1/3 into the Kconfig changes for ARM support as well.

-- 
Darren Hart
VMware Open Source Technology Center