block: use proper return value from bio_failfast()

[ Upstream commit f3ca73862453ac1e64fc6968a14bf66d839cd2d8 ]

kernel test robot complains about a type mismatch:

   block/blk-merge.c:984:42: sparse:     expected restricted blk_opf_t const [usertype] ff
   block/blk-merge.c:984:42: sparse:     got unsigned int
   block/blk-merge.c:1010:42: sparse: sparse: incorrect type in initializer (different base types) @@     expected restricted blk_opf_t const [usertype] ff @@     got unsigned int @@
   block/blk-merge.c:1010:42: sparse:     expected restricted blk_opf_t const [usertype] ff
   block/blk-merge.c:1010:42: sparse:     got unsigned int

because bio_failfast() is return an unsigned int rather than the
appropriate blk_opt_f type. Fix it up.

Fixes: 3ce6a115980c ("block: sync mixed merged request's failfast with 1st bio's")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202302170743.GXypM9Rt-lkp@intel.com/
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 914da38..17ac532 100644 (file)
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -747,7 +747,7 @@ void blk_rq_set_mixed_merge(struct request *rq)
        rq->rq_flags |= RQF_MIXED_MERGE;
 }
 
-static inline unsigned int bio_failfast(const struct bio *bio)
+static inline blk_opf_t bio_failfast(const struct bio *bio)
 {
        if (bio->bi_opf & REQ_RAHEAD)
                return REQ_FAILFAST_MASK;