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Call drm_dev_enter() and drm_dev_exit() in the outer-most callbacks of the modesetting pipeline. If drm_dev_enter() fails, the driver can thus avoid unnecessary work. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Noralf Trønnes <noralf@tronnes.org> # drm/tiny/mi0283qt Link: https://patchwork.freedesktop.org/patch/msgid/20221202125644.7917-9-tzimmermann@suse.de