linux-kernel - Re: [PATCH 02/16] bus: mhi: core: Add support for registering MHI controllers

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Message-ID: <20200123181402.GA1897633@kroah.com>
Date:   Thu, 23 Jan 2020 19:14:02 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Jeffrey Hugo <jhugo@...eaurora.org>
Cc:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        arnd@...db.de, smohanad@...eaurora.org, kvalo@...eaurora.org,
        bjorn.andersson@...aro.org, hemantk@...eaurora.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/16] bus: mhi: core: Add support for registering MHI
 controllers

On Thu, Jan 23, 2020 at 10:05:50AM -0700, Jeffrey Hugo wrote:
> On 1/23/2020 4:18 AM, Manivannan Sadhasivam wrote:
> > This commit adds support for registering MHI controller drivers with
> > the MHI stack. MHI controller drivers manages the interaction with the
> > MHI client devices such as the external modems and WiFi chipsets. They
> > are also the MHI bus master in charge of managing the physical link
> > between the host and client device.
> > 
> > This is based on the patch submitted by Sujeev Dias:
> > https://lkml.org/lkml/2018/7/9/987
> > 
> > Signed-off-by: Sujeev Dias <sdias@...eaurora.org>
> > Signed-off-by: Siddartha Mohanadoss <smohanad@...eaurora.org>
> > [jhugo: added static config for controllers and fixed several bugs]
> > Signed-off-by: Jeffrey Hugo <jhugo@...eaurora.org>
> > [mani: removed DT dependency, splitted and cleaned up for upstream]
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >   drivers/bus/Kconfig             |   1 +
> >   drivers/bus/Makefile            |   3 +
> >   drivers/bus/mhi/Kconfig         |  14 +
> >   drivers/bus/mhi/Makefile        |   2 +
> >   drivers/bus/mhi/core/Makefile   |   3 +
> >   drivers/bus/mhi/core/init.c     | 404 +++++++++++++++++++++++++++++
> >   drivers/bus/mhi/core/internal.h | 169 ++++++++++++
> >   include/linux/mhi.h             | 438 ++++++++++++++++++++++++++++++++
> >   include/linux/mod_devicetable.h |  12 +
> >   9 files changed, 1046 insertions(+)
> >   create mode 100644 drivers/bus/mhi/Kconfig
> >   create mode 100644 drivers/bus/mhi/Makefile
> >   create mode 100644 drivers/bus/mhi/core/Makefile
> >   create mode 100644 drivers/bus/mhi/core/init.c
> >   create mode 100644 drivers/bus/mhi/core/internal.h
> >   create mode 100644 include/linux/mhi.h
> > 
> > diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
> > index 50200d1c06ea..383934e54786 100644
> > --- a/drivers/bus/Kconfig
> > +++ b/drivers/bus/Kconfig
> > @@ -202,5 +202,6 @@ config DA8XX_MSTPRI
> >   	  peripherals.
> >   source "drivers/bus/fsl-mc/Kconfig"
> > +source "drivers/bus/mhi/Kconfig"
> >   endmenu
> > diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
> > index 1320bcf9fa9d..05f32cd694a4 100644
> > --- a/drivers/bus/Makefile
> > +++ b/drivers/bus/Makefile
> > @@ -34,3 +34,6 @@ obj-$(CONFIG_UNIPHIER_SYSTEM_BUS)	+= uniphier-system-bus.o
> >   obj-$(CONFIG_VEXPRESS_CONFIG)	+= vexpress-config.o
> >   obj-$(CONFIG_DA8XX_MSTPRI)	+= da8xx-mstpri.o
> > +
> > +# MHI
> > +obj-$(CONFIG_MHI_BUS)		+= mhi/
> > diff --git a/drivers/bus/mhi/Kconfig b/drivers/bus/mhi/Kconfig
> > new file mode 100644
> > index 000000000000..a8bd9bd7db7c
> > --- /dev/null
> > +++ b/drivers/bus/mhi/Kconfig
> > @@ -0,0 +1,14 @@
> > +# SPDX-License-Identifier: GPL-2.0
> 
> first time I noticed this, although I suspect this will need to be corrected
> "everywhere" -
> Per the SPDX website, the "GPL-2.0" label is deprecated.  It's replacement
> is "GPL-2.0-only".
> I think all instances should be updated to "GPL-2.0-only"

No, it is fine, please read Documentation/process/license-rules.rst

thanks,

greg k-h