• Bart Van Assche's avatar
    bfq: Suppress compiler warnings about comparisons · 1530486c
    Bart Van Assche authored
    This patch avoids that the following warnings are reported when
    building with W=1:
    
    block/bfq-iosched.c: In function 'bfq_back_seek_max_store':
    block/bfq-iosched.c:4860:13: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
      if (__data < (MIN))      \
                 ^
    block/bfq-iosched.c:4876:1: note: in expansion of macro 'STORE_FUNCTION'
     STORE_FUNCTION(bfq_back_seek_max_store, &bfqd->bfq_back_max, 0, INT_MAX, 0);
     ^~~~~~~~~~~~~~
    block/bfq-iosched.c: In function 'bfq_slice_idle_store':
    block/bfq-iosched.c:4860:13: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
      if (__data < (MIN))      \
                 ^
    block/bfq-iosched.c:4879:1: note: in expansion of macro 'STORE_FUNCTION'
     STORE_FUNCTION(bfq_slice_idle_store, &bfqd->bfq_slice_idle, 0, INT_MAX, 2);
     ^~~~~~~~~~~~~~
    block/bfq-iosched.c: In function 'bfq_slice_idle_us_store':
    block/bfq-iosched.c:4892:13: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
      if (__data < (MIN))      \
                 ^
    block/bfq-iosched.c:4899:1: note: in expansion of macro 'USEC_STORE_FUNCTION'
     USEC_STORE_FUNCTION(bfq_slice_idle_us_store, &bfqd->bfq_slice_idle, 0,
     ^~~~~~~~~~~~~~~~~~~
    Acked-by: default avatarPaolo Valente <paolo.valente@linaro.org>
    Signed-off-by: default avatarBart Van Assche <bart.vanassche@wdc.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    1530486c
bfq-iosched.c 164 KB