On Thu, Aug 25, 2016 at 8:06 AM, Keith Busch <keith.busch at intel.com> wrote: > Is there anything else in the dmesg occuring when you observe the ff's > CSTS register value? That status usually (only?) happens if the device > link is disconnected or broken. no messages are displayed in dmesg when CSTS is read as all FFs. thanks Nisha