mmc_block: indicate strict ordering
The MMC block driver services requests one at a time and in strict
order. Indicate this to the block layer so that it can handle barriers
in an efficient manner.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 5c8f037..c25c975 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -131,6 +131,7 @@
mq->req = NULL;
blk_queue_prep_rq(mq->queue, mmc_prep_request);
+ blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN, NULL);
#ifdef CONFIG_MMC_BLOCK_BOUNCE
if (host->max_hw_segs == 1) {