On Mon, Aug 10, 2015 at 01:59:07PM +0200, Thierry Reding wrote: > On Mon, Aug 10, 2015 at 11:55:38AM +0200, Daniel Vetter wrote: > > ->load is depracated, bus functionst are deprecated and everyone > > should use drm_dev_alloc®ister. > > Why would you want to deprecated ->load()? Even if you use > drm_dev_alloc() and drm_dev_register(), there's still use for ->load() > because it gives you the subsystem-level initialization entry point. ->load is called after the drm /dev node is registered and hence you can't really do any driver setup in there without risking races. We paper over that using drm_global_mutex, but that doesn't work for any other driver/userspace interface like sysfs/debugfs because of deadlocks. And we can't just reorder ->load to happen before the /dev nodes are registered because a lot of drivers would fall over if we do that. This is typical midlayer fail where the core calls into the driver instead of the other way round. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
