From 2d9b02be73ba8efba406b399a722b4e33614dd0e Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 14 Jul 2022 11:06:30 -0700
Subject: block: Change the type of req_op() and bio_op() into enum req_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>
Link: https://lore.kernel.org/r/20220714180729.1065367-5-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 include/linux/blk-mq.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'include/linux/blk-mq.h')

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index d74f6a6b7e69..677195de0663 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -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)
 {
-- 
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