linux-kernel - linux-next: build warning after merge of the device-mapper tree

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Date:   Wed, 20 Feb 2019 13:15:55 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Alasdair G Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: linux-next: build warning after merge of the device-mapper tree

Hi all,

After merging the device-mapper tree, today's linux-next build
(powerpc_ppc64_defconfig) produced this warning:

In file included from include/linux/blkdev.h:21,
                 from include/linux/blk-mq.h:5,
                 from drivers/md/dm-core.h:14,
                 from drivers/md/dm.c:8:
drivers/md/dm.c: In function 'dec_pending':
include/linux/bio.h:626:15: warning: 'bio' may be used uninitialized in this function [-Wmaybe-uninitialized]
  bio->bi_next = bl->head;
  ~~~~~~~~~~~~~^~~~~~~~~~
drivers/md/dm.c:930:14: note: 'bio' was declared here
  struct bio *bio;
              ^~~

Introduced by commit

  58c66b86cfe7 ("dm: improve noclone_endio() to support multipath target")

-- 
Cheers,
Stephen Rothwell

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