linux-kernel - [PATCH] genhd must

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Date:	Tue, 11 Mar 2008 17:13:15 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] genhd must_check warning fix

Fixes:

	block/genhd.c:361: warning: ignoring return value of ‘class_register’, declared with attribute warn_unused_result

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 block/genhd.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index c44527d..00da521 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -360,7 +360,9 @@ static struct kobject *base_probe(dev_t devt, int *part, void *data)
 
 static int __init genhd_device_init(void)
 {
-	class_register(&block_class);
+	int error = class_register(&block_class);
+	if (unlikely(error))
+		return error;
 	bdev_map = kobj_map_init(base_probe, &block_class_lock);
 	blk_dev_init();
 
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