[Intel-gfx] [PATCH v3 7/7] drm/tinydrm: Use drm_dev_enter/exit()

[Gerd Hoffmann]

On Mon, Feb 25, 2019 at 03:42:32PM +0100, Noralf Trønnes wrote:
> This protects device resources from use after device removal.
> 
> There are 3 ways for driver-device unbinding to happen:
> - The driver module is unloaded causing the driver to be unregistered.
>   This can't happen as long as there are open file handles because a
>   reference is taken on the module.
> - The device is removed (Device Tree overlay unloading).
>   This can happen at any time.
> - The driver sysfs unbind file can be used to unbind the driver from the
>   device. This can happen any time.
> 
> v2: Since drm_atomic_helper_shutdown() has to be called after
>     drm_dev_unplug() we don't want do block ->disable after unplug.
> 
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>

Acked-by: Gerd Hoffmann <kraxel at redhat.com>