On Wed, Apr 21, 2021 at 05:43:16PM +0100, Marc Zyngier wrote: > When failing the driver probe because of invalid firmware properties, > the GTDT driver unmaps the interrupt that it mapped earlier. > > However, it never checks whether the mapping of the interrupt actially > succeeded. Even more, should the firmware report an illegal interrupt > number that overlaps with the GIC SGI range, this can result in an > IPI being unmapped, and subsequent fireworks (as reported by Dann > Frazier). > > Rework the driver to have a slightly saner behaviour and actually > check whether the interrupt has been mapped before unmapping things. > Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx> -- Regards, Sudeep
