linux-kernel - Re: [PATCH] drm/legacy: Fix type for drm_local

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Date:   Fri, 3 Apr 2020 10:14:34 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     Nathan Chancellor <natechancellor@...il.com>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] drm/legacy: Fix type for drm_local_map.offset

On Fri, Apr 3, 2020 at 1:29 AM Daniel Vetter <daniel@...ll.ch> wrote:
>
> > Tested-by: Nathan Chancellor <natechancellor@...il.com> # build
>
> This works too, missed it when replying to Linus
>
> Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
>
> Linus I guess this one is better, but like I explained it really
> doesn't matter what we do with drm legacy code, it's a horror show
> that should be disabled on all modern distros anyway. We just keep it
> because of "never break old uapi".

Ok, That patch from Chris looks fine to me too.

dma_addr_t and resource_size_t aren't the same, but at least
dma_addr_t should always be the bigger one.

And it does look like nothing else ever takes the address of this
field, so the ones that might want just the resource_size_t part will
at least have enough bits.

So I think Chris' patch is the way to go. I'm assuming I'll get it
through the normal drm tree channels, this doesn't sound _so_ urgent
that I'd need to expedite that patch into my tree and apply it
directly.

Thanks,

               Linus