Fix the following warnings:
CC block/blk-merge.o
In file included from block/blk-merge.c:7:0:
block/blk-merge.c: In function ‘blk_queue_split’:
include/linux/blkdev.h:1368:21: warning: ‘bvprv.bv_offset’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
((bprv->bv_offset + bprv->bv_len) & queue_virt_boundary(q));
^
block/blk-merge.c:70:21: note: ‘bvprv.bv_offset’ was declared here
struct bio_vec bv, bvprv;
^
In file included from block/blk-merge.c:7:0:
include/linux/blkdev.h:1368:21: warning: ‘bvprv.bv_len’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
((bprv->bv_offset + bprv->bv_len) & queue_virt_boundary(q));
^
block/blk-merge.c:70:21: note: ‘bvprv.bv_len’ was declared here
struct bio_vec bv, bvprv;
^
In file included from ./arch/x86/include/asm/page.h:70:0,
from ./arch/x86/include/asm/thread_info.h:11,
from include/linux/thread_info.h:54,
from ./arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:64,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from block/blk-merge.c:5:
include/asm-generic/memory_model.h:52:52: warning: ‘bvprv.bv_page’ may
be used uninitialized in this function [-Wmaybe-uninitialized]
#define __page_to_pfn(page) (unsigned long)((page) - vmemmap)
^
block/blk-merge.c:70:21: note: ‘bvprv.bv_page’ was declared here
struct bio_vec bv, bvprv;
^
Signed-off-by: Geliang Tang <[email protected]>
---
block/blk-merge.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-merge.c b/block/blk-merge.c
index d088cff..5bd84c8 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -67,7 +67,7 @@ static struct bio *blk_bio_segment_split(struct request_queue
*q,
struct bio_set *bs)
{
struct bio *split;
- struct bio_vec bv, bvprv;
+ struct bio_vec bv, bvprv = { NULL };
struct bvec_iter iter;
unsigned seg_size = 0, nsegs = 0, sectors = 0;
int prev = 0;
--
2.3.4
--
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