On 29/03/17 12:11, Laurent Pinchart wrote: >> The hw is disabled before drm_atomic_helper_shutdown() is called only if >> you have fbdev. And fbdev on all the connectors. If that's not the case, >> we need drm_atomic_helper_shutdown() to disable the hw. > > But if you have no fbdev, as userspace must not hold the device node open > here, isn't the device disabled already ? Unfortunately not. See the "drm/atomic: Introduce drm_atomic_helper_shutdown" thread on dri-devel. Tomi
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