freebsd-nq/sys/dev/nvme
Jim Harris 7b036d7790 nvme: avoid duplicate SET_NUM_QUEUES commands
nvme(4) issues a SET_NUM_QUEUES command during device
initialization to ensure enough I/O queues exists for each
of the MSI-X vectors we have allocated.  The SET_NUM_QUEUES
command is then issued again during nvme_ctrlr_start(), to
ensure that is properly set after any controller reset.

At least one NVMe drive exists which fails this second
SET_NUM_QUEUES command during device initialization.  So
change nvme_ctrlr_start() to only issue its SET_NUM_QUEUES
command when it is coming out of a reset - avoiding the
duplicate SET_NUM_QUEUES during device initialization.

Reported by:	gallatin
MFC after:	3 days
Sponsored by:	Intel
2016-02-11 17:32:41 +00:00
..
nvme_ctrlr_cmd.c
nvme_ctrlr.c nvme: avoid duplicate SET_NUM_QUEUES commands 2016-02-11 17:32:41 +00:00
nvme_ns_cmd.c
nvme_ns.c
nvme_private.h
nvme_qpair.c
nvme_sysctl.c
nvme_test.c
nvme_util.c
nvme.c
nvme.h