sound: usb-audio: add workaround for Blue Microphones devices

[safe/jmp/linux-2.6] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index ca86192..6f23753 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -100,6 +100,14 @@ int elv_rq_merge_ok(struct request *rq, struct bio *bio)
        if (bio_integrity(bio) != blk_integrity_rq(rq))
                return 0;
 
+       /*
+        * Don't merge if failfast settings don't match
+        */
+       if (bio_failfast_dev(bio)       != blk_failfast_dev(rq)         ||
+           bio_failfast_transport(bio) != blk_failfast_transport(rq)   ||
+           bio_failfast_driver(bio)    != blk_failfast_driver(rq))
+               return 0;
+
        if (!elv_iosched_allow_merge(rq, bio))
                return 0;