linux-kernel - Re: [PATCH 1/2] cdx: Enable COMPILE

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Message-ID: <2023121509-snuggle-lagged-1365@gregkh>
Date: Fri, 15 Dec 2023 17:10:38 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Rob Herring <robh@...nel.org>
Cc: Nipun Gupta <nipun.gupta@....com>,
	Nikhil Agarwal <nikhil.agarwal@....com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] cdx: Enable COMPILE_TEST

On Fri, Dec 15, 2023 at 05:09:15PM +0100, Greg Kroah-Hartman wrote:
> On Thu, Dec 07, 2023 at 10:31:26AM -0600, Rob Herring wrote:
> > There is no reason CDX needs to depend on ARM64 other than limiting
> > visibility. So let's also enable building with COMPILE_TEST.
> > 
> > The CONFIG_OF dependency is redundant as ARM64 always enables it and all
> > the DT functions have empty stubs.
> > 
> > Signed-off-by: Rob Herring <robh@...nel.org>
> > ---
> >  drivers/cdx/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/cdx/Kconfig b/drivers/cdx/Kconfig
> > index a08958485e31..7cdb7c414453 100644
> > --- a/drivers/cdx/Kconfig
> > +++ b/drivers/cdx/Kconfig
> > @@ -7,7 +7,7 @@
> >  
> >  config CDX_BUS
> >  	bool "CDX Bus driver"
> > -	depends on OF && ARM64
> > +	depends on ARM64 || COMPILE_TEST
> 
> Ok, good start, now we need to turn this into a module, what's keeping
> it from being able to be built as a tristate?

To answer my own question, the following errors:

ERROR: modpost: missing MODULE_LICENSE() in drivers/cdx/cdx.o
ERROR: modpost: "iommu_device_unuse_default_domain" [drivers/cdx/cdx.ko] undefined!
ERROR: modpost: "iommu_device_use_default_domain" [drivers/cdx/cdx.ko] undefined!

Would be great for someone to fix this up...

thanks,

greg k-h