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| author | Arnd Bergmann <arnd@arndb.de> | 2016-10-21 17:42:33 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-10-25 04:51:22 +0200 |
| commit | 3c4da75814c4b8871116940eb32d3a5243026918 (patch) | |
| tree | 8d589efd82695f294ed859c5ac0d802f9c1f2c3f /block | |
| parent | sd: Implement support for ZBC devices (diff) | |
| download | linux-3c4da75814c4b8871116940eb32d3a5243026918.tar.xz linux-3c4da75814c4b8871116940eb32d3a5243026918.zip | |
block: zoned: fix harmless maybe-uninitialized warning
The blkdev_report_zones produces a harmless warning when
-Wmaybe-uninitialized is set, after gcc gets a little confused
about the multiple 'goto' here:
block/blk-zoned.c: In function 'blkdev_report_zones':
block/blk-zoned.c:188:13: error: 'nz' may be used uninitialized in this function [-Werror=maybe-uninitialized]
Moving the assignment to nr_zones makes this a little simpler
while also avoiding the warning reliably. I'm removing the
extraneous initialization of 'int ret' in the same patch, as
that is semi-related and could cause an uninitialized use of
that variable to not produce a warning.
Fixes: 6a0cb1bc106f ("block: Implement support for zoned block devices")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-zoned.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 667f95d86695..472211fa183a 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -80,7 +80,7 @@ int blkdev_report_zones(struct block_device *bdev, unsigned int i, n, nz; unsigned int ofst; void *addr; - int ret = 0; + int ret; if (!q) return -ENXIO; @@ -179,14 +179,12 @@ int blkdev_report_zones(struct block_device *bdev, } + *nr_zones = nz; out: bio_for_each_segment_all(bv, bio, i) __free_page(bv->bv_page); bio_put(bio); - if (ret == 0) - *nr_zones = nz; - return ret; } EXPORT_SYMBOL_GPL(blkdev_report_zones); |