linux-kernel - RE: [EXT] Re: [PATCH -next] NTB: EPF: Fix Kconfig dependency

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Date:   Thu, 23 Jun 2022 15:58:33 +0000
From:   Frank Li <frank.li@....com>
To:     Bjorn Helgaas <helgaas@...nel.org>
CC:     Ren Zhijie <renzhijie2@...wei.com>,
        "kishon@...com" <kishon@...com>,
        "lpieralisi@...nel.org" <lpieralisi@...nel.org>,
        "kw@...ux.com" <kw@...ux.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "jdmason@...zu.us" <jdmason@...zu.us>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [EXT] Re: [PATCH -next] NTB: EPF: Fix Kconfig dependency



> -----Original Message-----
> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: Thursday, June 23, 2022 10:55 AM
> To: Frank Li <frank.li@....com>
> Cc: Ren Zhijie <renzhijie2@...wei.com>; kishon@...com;
> lpieralisi@...nel.org; kw@...ux.com; bhelgaas@...gle.com;
> jdmason@...zu.us; linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: [EXT] Re: [PATCH -next] NTB: EPF: Fix Kconfig dependency
> 
> Caution: EXT Email
> 
> On Thu, Jun 23, 2022 at 03:36:38PM +0000, Frank Li wrote:
> > > -----Original Message-----
> > > From: Ren Zhijie <renzhijie2@...wei.com>
> > > Sent: Thursday, June 23, 2022 3:46 AM
> > > To: kishon@...com; lpieralisi@...nel.org; kw@...ux.com;
> > > bhelgaas@...gle.com; jdmason@...zu.us; Frank Li <frank.li@....com>
> > > Cc: linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org; Ren Zhijie
> > > <renzhijie2@...wei.com>
> > > Subject: [PATCH -next] NTB: EPF: Fix Kconfig dependency
> 
> @Ren, please use a typical subject line for the file, e.g.,
> 
>   PCI: endpoint: ...
> 
> > > If CONFIG_NTB is not set and CONFIG_PCI_EPF_VNTB is y.
> > >
> > > make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-, will be failed,
> like
> > > this:
> > >
> > > drivers/pci/endpoint/functions/pci-epf-vntb.o: In function
> > > `epf_ntb_cmd_handler':
> > > pci-epf-vntb.c:(.text+0x95e): undefined reference to `ntb_db_event'
> > > pci-epf-vntb.c:(.text+0xa1f): undefined reference to `ntb_link_event'
> > > pci-epf-vntb.c:(.text+0xa42): undefined reference to `ntb_link_event'
> > > drivers/pci/endpoint/functions/pci-epf-vntb.o: In function
> `pci_vntb_probe':
> > > pci-epf-vntb.c:(.text+0x1250): undefined reference to
> `ntb_register_device'
> > >
> > > The functions ntb_*() are defined in drivers/ntb/core.c, which need
> > > CONFIG_NTB setting y to be build-in.
> > > To fix this build error, add depends on NTB.
> > >
> > > Reported-by: Hulk Robot <hulkci@...wei.com>
> > > Fixes: ff32fac00d97("NTB: EPF: support NTB transfer between PCI RC and
> EP
> > > connection")
> > > Signed-off-by: Ren Zhijie <renzhijie2@...wei.com>
> > > ---
> > [Frank Li] Acked
> 
> @Frank: if you use the conventional style, e.g.,
> "Acked-by: Frank Li <frank.li@....com>", tooling like b4 will
> automatically pick it up.  Just saying "Acked" is likely to get missed
> or ignored.

Thanks. 
Acked-by: Frank Li <frank.li@....com>

> >
> > >  drivers/pci/endpoint/functions/Kconfig | 1 +
> > >  1 file changed, 1 insertion(+)
> > >
> > > diff --git a/drivers/pci/endpoint/functions/Kconfig
> > > b/drivers/pci/endpoint/functions/Kconfig
> > > index 362555b024e8..9beee4f0f4ee 100644
> > > --- a/drivers/pci/endpoint/functions/Kconfig
> > > +++ b/drivers/pci/endpoint/functions/Kconfig
> > > @@ -29,6 +29,7 @@ config PCI_EPF_NTB
> > >  config PCI_EPF_VNTB
> > >          tristate "PCI Endpoint NTB driver"
> > >          depends on PCI_ENDPOINT
> > > +        depends on NTB
> > >          select CONFIGFS_FS
> > >          help
> > >            Select this configuration option to enable the Non-Transparent
> > > --
> > > 2.17.1
> >