[PATCH] rust: drm: Drop the use of Opaque for ioctl arguments

[Daniel Almeida]

Hi Beata,

>  There is no concurrent access nor shared references, unless the
> handler decides otherwise

It can’t do so in safe code. There is no way to manufacture a shared
reference from a mutable one in safe code and if it passes that to C, then
it’s already using a unsafe block for the ffi call.

Unless I missed something?

— Daniel