Re: [PATCH v2 5/6] tpm: add driver for cr50 on SPI

From: Stephen Boyd
Date: Wed Jul 17 2019 - 14:21:18 EST


Quoting Jason Gunthorpe (2019-07-17 10:25:44)
> On Wed, Jul 17, 2019 at 10:22:20AM -0700, Stephen Boyd wrote:
> > Quoting Jason Gunthorpe (2019-07-17 10:12:16)
> > > On Wed, Jul 17, 2019 at 10:05:52AM -0700, Stephen Boyd wrote:
> > > >
> > > > Yes. The space savings comes from having the extra module 'cr50.ko' that
> > > > holds almost nothing at all when the two drivers are modules.
> > >
> > > I'm not sure it is an actual savings, there is alot of minimum
> > > overhead and alignment to have a module in the first place.
> > >
> >
> > Yeah. I'm pretty sure that's why it's a bool and not a tristate for this
> > symbol. A module has overhead that is not necessary for these little
> > helpers.
>
> Linking driver stuff like that to the kernel is pretty hacky, IMHO
>

So combine lines?

obj-$(CONFIG_...) += cr50.o cr50_spi.o

Sounds great.