Hi, > > So maybe a "enum plane_state" (instead of "bool is_enabled")? So > > we > > can clearly disturgish ENABLED, DISABLED, NOT_SUPPORTED cases? > > What's the difference between NOT_SUPPORTED and -ENOTTY on the ioctl? > Perhaps a bit in a flags field could specify EN/DIS-ABLED and leave > room for things we're forgetting.
So throw error in the NOT_SUPPORTED case, otherwise set/clear a PLANE_ENABLED bit in flags? Yep, that will work too. cheers, Gerd
