[PATCH 4/5] drm/vmwgfx: remove custom ioctl io encoding check

[Emil Velikov]

On 2019/05/23, Thomas Hellstrom wrote:
> Hi, Emil,
> 
> On Wed, 2019-05-22 at 17:41 +0100, Emil Velikov wrote:
> > From: Emil Velikov <emil.velikov at collabora.com>
> > 
> > Drop the custom ioctl io encoding check - core drm does it for us.
> 
> I fail to see where the core does this, or do I miss something?

drm_ioctl() allows for the encoding to be changed and attributes that only the
appropriate size is copied in/out of the kernel.

Technically the function is more relaxed relative to the vmwgfx check, yet
seems perfectly reasonable.

Is there any corner-case that isn't but should be handled in drm_ioctl()?

-Emil