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| author |   Andrew Morton <akpm@linux-foundation.org> | 2020-02-03 17:34:52 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-04 03:05:24 +0000 |
| commit | 046755a28f9ddc95fd153e76e62d4b3205ac79cd (patch) | |
| tree | 8e2c1b89271bd0587ab170fa9f3965151b0c6e7d /drivers/block | |
| parent | drivers/block/null_blk_main.c: fix layout (diff) | |
| download | linux-dev-046755a28f9ddc95fd153e76e62d4b3205ac79cd.tar.xz linux-dev-046755a28f9ddc95fd153e76e62d4b3205ac79cd.zip | |
drivers/block/null_blk_main.c: fix uninitialized var warnings
With gcc-7.2, many instances of
drivers/block/null_blk_main.c: In function ‘nullb_device_zone_nr_conv_store’:
drivers/block/null_blk_main.c:291:12: warning: ‘new_value’ may be used uninitialized in this function [-Wmaybe-uninitialized]
dev->NAME = new_value; \
^
drivers/block/null_blk_main.c:279:7: note: ‘new_value’ was declared here
TYPE new_value; \
^
Presumably notabug, so use uninitialized_var() to suppress them.
Cc: Shaohua Li <shli@fb.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/null_blk_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 9ce75f171f8b..16510795e377 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -276,7 +276,7 @@ nullb_device_##NAME##_store(struct config_item *item, const char *page, \ { \ int (*apply_fn)(struct nullb_device *dev, TYPE new_value) = APPLY;\ struct nullb_device *dev = to_nullb_device(item); \ - TYPE new_value; \ + TYPE uninitialized_var(new_value); \ int ret; \ \ ret = nullb_device_##TYPE##_attr_store(&new_value, page, count);\ |