rust: miscdevice: expose the parent device as &Device<Bound>
Now that the misc device abstraction design considers device drivers,
take advantage of the fact that we can safely expose the parent of the
misc device as &Device<Bound> within the misc device's file operations.
Drivers can use this bound device reference to access device resources
without additional overhead through Devres::access().
Expose the &Device<Bound> parent, the &Device representation of the misc
device and the registration data through a new type MiscArgs through the
MiscDevice callbacks.
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2 files changed
