linux-kernel - Re: [PATCH] staging: rtsx: Add support for RTS5260

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Message-ID: <20171013095422.6mql3mso77duoiko@dell>
Date:   Fri, 13 Oct 2017 10:54:22 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     rui_feng@...lsil.com.cn, linux-kernel@...r.kernel.org,
        devel@...verdev.osuosl.org, ricky_wu@...ltek.com
Subject: Re: [PATCH] staging: rtsx: Add support for RTS5260

On Fri, 13 Oct 2017, Greg KH wrote:

> On Fri, Oct 13, 2017 at 04:50:35PM +0800, rui_feng@...lsil.com.cn wrote:
> > From: rui_feng <rui_feng@...lsil.com.cn>
> > 
> > Add support for new chip rts5260.
> > In order to support rts5260，the definitions of some internal
> > registers and workflow have to be modified and are different from its
> > predecessors and OCP function is added for RTS5260.
> > So we need this patch to ensure RTS5260 can work.
> > 
> > Signed-off-by: Rui Feng <rui_feng@...lsil.com.cn>
> 
> Your from and signed-off-by name does not match :(
> 
> > ---
> >  drivers/mfd/Makefile              |   4 +
> >  drivers/mfd/rtsx_pcr.c            | 127 ++++++-
> >  drivers/mfd/rtsx_pcr.h            |  12 +
> >  drivers/staging/Kconfig           |   2 +
> >  drivers/staging/rts5260/Kconfig   |   6 +
> >  drivers/staging/rts5260/rts5260.c | 748 ++++++++++++++++++++++++++++++++++++++
> >  drivers/staging/rts5260/rts5260.h |  45 +++
> >  include/linux/mfd/rtsx_pci.h      | 234 +++++++++++-
> 
> I do not see a reason why this is a staging driver.  Where is the TODO
> file listing what needs to be done to get it out of staging?  Why can it
> not just go into the "real" part of the kernel?

It's not a staging driver.  Rui's focus appears to be to have this
driver accepted into Mainline by hook or by crock.  He's tried MFD,
Misc and now Staging!

Background:

There are a number of drivers in this family which currently reside in
MFD.  These were accepted before my time.  After a recent review I've
made the decision that these aren't MFD drivers at all.

MFD drivers are ones which aid in registering and setting up shared
resources for sub-devices which reside on the same piece of silicon.
This driver does basically none of that.  Instead it *is* the (what we
describe above as) sub-device.  It does everything.

In the absence of a subsystem which covers this type of device, I
suggested Misk as a good location to place these drivers.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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