linux-kernel - [PATCH] blk-mq: use force attribute for blk_status

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Date:   Sat, 14 May 2022 13:03:54 +0300
From:   Vasily Averin <vvs@...nvz.org>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org
Cc:     kernel@...nvz.org, linux-kernel@...r.kernel.org
Subject: [PATCH] blk-mq: use force attribute for blk_status_t casts

Fixes sparse warnings:
block/blk-mq.c:1163:36: sparse:
 warning: cast from restricted blk_status_t
block/blk-mq.c:1251:17: sparse:
 warning: cast to restricted blk_status_t

Signed-off-by: Vasily Averin <vvs@...nvz.org>
---
 block/blk-mq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 84d749511f55..1b887f2d4a19 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1160,7 +1160,7 @@ static void blk_end_sync_rq(struct request *rq, blk_status_t error)
 {
 	struct completion *waiting = rq->end_io_data;
 
-	rq->end_io_data = (void *)(uintptr_t)error;
+	rq->end_io_data = (void *)(__force uintptr_t)error;
 
 	/*
 	 * complete last, if this is a stack request the process (and thus
@@ -1248,7 +1248,7 @@ blk_status_t blk_execute_rq(struct request *rq, bool at_head)
 	else
 		wait_for_completion_io(&wait);
 
-	return (blk_status_t)(uintptr_t)rq->end_io_data;
+	return (__force blk_status_t)(uintptr_t)rq->end_io_data;
 }
 EXPORT_SYMBOL(blk_execute_rq);
 
-- 
2.31.1