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

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Message-Id: <20131126132946.e402679788ae8269f0c5128a@canb.auug.org.au>
Date:	Tue, 26 Nov 2013 13:29:46 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Kent Overstreet <kmo@...erainc.com>
Subject: linux-next: build warnings after merge of the block tree

Hi Jens,

After merging the block tree, today's linux-next build (arm
multi_v7_defconfig) produced these warnings:

block/blk-merge.c: In function 'blk_rq_map_sg':
block/blk-merge.c:133:8: warning: 'bvprv.bv_len' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:171:23: note: 'bvprv.bv_len' was declared here
block/blk-merge.c:133:8: warning: 'bvprv.bv_page' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:171:23: note: 'bvprv.bv_page' was declared here
block/blk-merge.c:133:8: warning: 'bvprv.bv_offset' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:171:23: note: 'bvprv.bv_offset' was declared here
block/blk-merge.c: In function 'blk_bio_map_sg':
block/blk-merge.c:133:8: warning: 'bvprv.bv_len' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:233:23: note: 'bvprv.bv_len' was declared here
block/blk-merge.c:133:8: warning: 'bvprv.bv_offset' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:233:23: note: 'bvprv.bv_offset' was declared here
block/blk-merge.c:133:8: warning: 'bvprv.bv_page' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:233:23: note: 'bvprv.bv_page' was declared here
block/blk-merge.c: In function 'attempt_merge':
block/blk-merge.c:108:7: warning: 'end_bv.bv_offset' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:89:17: note: 'end_bv.bv_offset' was declared here
block/blk-merge.c:108:7: warning: 'end_bv.bv_page' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:89:17: note: 'end_bv.bv_page' was declared here
block/blk-merge.c:108:7: warning: 'end_bv.bv_len' may be used uninitialized in this function [-Wuninitialized]
block/blk-merge.c:89:17: note: 'end_bv.bv_len' was declared here

arm has its own definition of BIOVEC_PHYS_MERGEABLE() if that is relevant.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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