mtip32xx: convert internal command issue to block IO path
authorJens Axboe <axboe@fb.com>
Fri, 28 Apr 2017 16:45:08 +0000 (10:45 -0600)
committerJens Axboe <axboe@fb.com>
Tue, 2 May 2017 13:52:08 +0000 (07:52 -0600)
commit3f5e6a35774cd6bb4fd6b32edb4efd2a3f90e4dd
treecbeaac6a62d43fbee2ee12badb3e00a7d8cf7fdc
parentbaed548a98397f57a71d61917177f7d42ab17881
mtip32xx: convert internal command issue to block IO path

The driver special cases certain things for command issue, depending
on whether it's an internal command or not. Make the internal commands
use the regular infrastructure for issuing IO.

Since this is an 8-group souped up AHCI variant, we have to deal
with NCQ vs non-queueable commands. Do this from the queue_rq
handler, by backing off unless the drive is idle.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/block/mtip32xx/mtip32xx.c