linux-kernel - Re: [PATCH v2 05/27] powerpc: Map & release OpenCAPI LPC memory

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Message-ID: <20200121081126.2f9c6972@bahia.lan>
Date:   Tue, 21 Jan 2020 08:11:26 +0100
From:   Greg Kurz <groug@...d.org>
To:     Andrew Donnellan <ajd@...ux.ibm.com>
Cc:     "Alastair D'Silva" <alastair@....ibm.com>, alastair@...ilva.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Frederic Barrat <fbarrat@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Keith Busch <keith.busch@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>,
        Anton Blanchard <anton@...abs.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
        Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
        Cédric Le Goater <clg@...d.org>,
        Anju T Sudhakar <anju@...ux.vnet.ibm.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Nicholas Piggin <npiggin@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-nvdimm@...ts.01.org, linux-mm@...ck.org
Subject: Re: [PATCH v2 05/27] powerpc: Map & release OpenCAPI LPC memory

On Tue, 21 Jan 2020 17:46:12 +1100
Andrew Donnellan <ajd@...ux.ibm.com> wrote:

> On 3/12/19 2:46 pm, Alastair D'Silva wrote:
> > From: Alastair D'Silva <alastair@...ilva.org>
> > 
> > This patch adds platform support to map & release LPC memory.
> 
> Might want to explain what LPC is.
> 
> Otherwise:
> 
> Reviewed-by: Andrew Donnellan <ajd@...ux.ibm.com>
> 
> > 
> > Signed-off-by: Alastair D'Silva <alastair@...ilva.org>
> > ---
> >   arch/powerpc/include/asm/pnv-ocxl.h   |  2 ++
> >   arch/powerpc/platforms/powernv/ocxl.c | 42 +++++++++++++++++++++++++++
> >   2 files changed, 44 insertions(+)
> > 
> > diff --git a/arch/powerpc/include/asm/pnv-ocxl.h b/arch/powerpc/include/asm/pnv-ocxl.h
> > index 7de82647e761..f8f8ffb48aa8 100644
> > --- a/arch/powerpc/include/asm/pnv-ocxl.h
> > +++ b/arch/powerpc/include/asm/pnv-ocxl.h
> > @@ -32,5 +32,7 @@ extern int pnv_ocxl_spa_remove_pe_from_cache(void *platform_data, int pe_handle)
> >   
> >   extern int pnv_ocxl_alloc_xive_irq(u32 *irq, u64 *trigger_addr);
> >   extern void pnv_ocxl_free_xive_irq(u32 irq);
> > +extern u64 pnv_ocxl_platform_lpc_setup(struct pci_dev *pdev, u64 size);
> > +extern void pnv_ocxl_platform_lpc_release(struct pci_dev *pdev);
> 
> nit: I don't think these need to be extern?
> 
> 

And even if they were, as verified by checkpatch:

"extern prototypes should be avoided in .h files"