Re: [PATCH 1/3] gpio: mxc: Support module build

[Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>]

On Fri, Jul 17, 2020 at 03:54:49PM +0200, Arnd Bergmann wrote:
> > And look at the driver core work for many driver subsystems to be fixed
> > up just to get a single kernel image to work on multiple platforms.
> > Just because older ones did it, doesn't mean it actually works today :)
> 
> Can you give a specific example? The only problem I'm aware of for
> those SoCs is drivers being outside of the mainline kernel. Clearly
> having support for loadable modules helps SoC vendors because it
> allows them to support a new platform with an existing binary kernel
> by shipping third-party driver modules, but for stuff that is already
> in mainline, we could in theory support all hardware in a single gigantic
> binary kernel with no support for loadable modules at all.

That did not work for many drivers for some reason, look at all the work
Saravana had to do in the driver core and device tree code for it to
happen correctly over the past year.

thanks,

greg k-h