• Arnd Bergmann's avatar
    block: avoid using uninitialized value in from queue_var_store · c678ef52
    Arnd Bergmann authored
    As found by gcc-4.8, the QUEUE_SYSFS_BIT_FNS macro creates functions
    that use a value generated by queue_var_store independent of whether
    that value was set or not.
    block/blk-sysfs.c: In function 'queue_store_nonrot':
    block/blk-sysfs.c:244:385: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized]
    Unlike most other such warnings, this one is not a false positive,
    writing any non-number string into the sysfs files indeed has
    an undefined result, rather than returning an error.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
blk-sysfs.c 15.8 KB