linux-kernel - linux-next: build failure after merge of the block tree

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Date:   Thu, 21 Jul 2022 13:11:32 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Christoph Hellwig <hch@....de>, Song Liu <song@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the block tree

Hi all,

After merging the block tree, today's linux-next build (x86_64
allmodconfig) failed like this:

drivers/md/md.c:717:22: error: 'mddev_find' defined but not used [-Werror=unused-function]
  717 | static struct mddev *mddev_find(dev_t unit)
      |                      ^~~~~~~~~~
cc1: all warnings being treated as errors

Caused by commit

  4500d5c17910 ("md: simplify md_open")

I have applied the following patch for today.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Thu, 21 Jul 2022 13:03:16 +1000
Subject: [PATCH] fix for "md: simplify md_open"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/md/md.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index fa500ae9863b..673a39042208 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -714,6 +714,7 @@ static dev_t mddev_alloc_unit(void)
 	return dev;
 }
 
+#ifndef MODULE
 static struct mddev *mddev_find(dev_t unit)
 {
 	struct mddev *mddev;
@@ -729,6 +730,7 @@ static struct mddev *mddev_find(dev_t unit)
 
 	return mddev;
 }
+#endif
 
 static struct mddev *mddev_alloc(dev_t unit)
 {
-- 
2.35.1
-- 
Cheers,
Stephen Rothwell

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