[Nouveau] [PATCH v4] vga_switcheroo: Add helper for deferred probing

[Lukas Wunner]

On Mon, May 23, 2016 at 09:40:59AM +0100, Emil Velikov wrote:
> On 21 May 2016 at 15:08, Lukas Wunner <lukas at wunner.de> wrote:
> > Daniel Vetter explicitly wanted the ability to use the helper in
> > vga_switcheroo audio clients, and those shouldn't run the apple-gmux
> > test. I think it makes sense to enclose it in the above-quoted if-block
> > *now* even though it's not needed. Once someone adds a check for an
> > audio client, chances are they'll forget to add this if-block.
> >
> Absolutely no arguments against any of that. Having a helper makes
> sense even without any of the above arguments - it's a 'nasty looking'
> if statement, duplicated multiple times. Speaking of which ...
> shouldn't there be a similar hunk for amdgpu ?

Currently vga_switcheroo_client_probe_defer() is only needed for the
MacBook Pro and the AMD GPUs used by Apple are only supported by radeon.
I've amended the commit message in v6 to explain that.


> Then again throwing everything into one patch does _not_ make sense.
> Don't know why people would insist on having re-factoring and
> functionality change as a single commit. Esp. in a place where hw
> combinations, and thus chances of things going wrong, are pretty high.

Noone insists, v1 of this patch didn't contain the functional change
you're taking exception to, I added it in v2 on Daniel's request and
didn't want to complicate things further, seemed like a trivial change
to me. Nevertheless I've spun this out into a separate commit now,
no problem at all.

Best regards,

Lukas