The incoming patch is for the rsxx driver (drivers/block/rsxx)
This patch fixes a kernel panic injected by patch id 8d26750143341831bc312f61c5ed141eeb75b8d0 where discards are getting mapped through the pci_map_page function call.
This patch relies on git commit 8d26750143341831bc312f61c5ed141eeb75b8d0.