@@ -405,6 +405,8 @@ unsigned int blk_recalc_rq_segments(struct request *rq)
return 1;
case REQ_OP_WRITE_ZEROES:
return 0;
+ default:
+ break;
}
rq_for_each_bvec(bv, rq, iter)
@@ -501,6 +501,8 @@ static enum action do_pd_io_start(void)
return do_pd_read_start();
else
return do_pd_write_start();
+ default:
+ break;
}
return Fail;
}
@@ -1542,6 +1542,8 @@ static blk_status_t __process_abnormal_io(struct clone_info *ci,
case REQ_OP_WRITE_ZEROES:
num_bios = ti->num_write_zeroes_bios;
break;
+ default:
+ break;
}
/*
@@ -198,8 +198,10 @@ struct request {
void *end_io_data;
};
-#define req_op(req) \
- ((req)->cmd_flags & REQ_OP_MASK)
+static inline enum req_op req_op(const struct request *req)
+{
+ return req->cmd_flags & REQ_OP_MASK;
+}
static inline bool blk_rq_is_passthrough(struct request *rq)
{
@@ -463,8 +463,10 @@ enum stat_group {
NR_STAT_GROUPS
};
-#define bio_op(bio) \
- ((bio)->bi_opf & REQ_OP_MASK)
+static inline enum req_op bio_op(const struct bio *bio)
+{
+ return bio->bi_opf & REQ_OP_MASK;
+}
/* obsolete, don't use in new code */
static inline void bio_set_op_attrs(struct bio *bio, unsigned op,
Improve static type checking by changing the type of the value returned by req_op() and bio_op() from unsigned int into enum req_op. Insert 'default: break;' in switch statements on the enum req_op type to prevent that the compiler warns about these switch statements. Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Damien Le Moal <damien.lemoal@wdc.com> Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@kernel.org> Cc: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> --- block/blk-merge.c | 2 ++ drivers/block/paride/pd.c | 2 ++ drivers/md/dm.c | 2 ++ include/linux/blk-mq.h | 6 ++++-- include/linux/blk_types.h | 6 ++++-- 5 files changed, 14 insertions(+), 4 deletions(-)