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    Subject[PATCH 5/7] s390/char: use for_each_clear_bit
    Date
    Use for_each_clear_bit() to iterate over all the cleared bit in a
    memory region.

    Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: linux390@de.ibm.com
    Cc: linux-s390@vger.kernel.org
    ---
    drivers/s390/char/sclp_cmd.c | 5 ++---
    1 files changed, 2 insertions(+), 3 deletions(-)

    diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
    index 0b54a91..168525a 100644
    --- a/drivers/s390/char/sclp_cmd.c
    +++ b/drivers/s390/char/sclp_cmd.c
    @@ -441,9 +441,8 @@ static int sclp_mem_notifier(struct notifier_block *nb,
    start = arg->start_pfn << PAGE_SHIFT;
    size = arg->nr_pages << PAGE_SHIFT;
    mutex_lock(&sclp_mem_mutex);
    - for (id = 0; id <= sclp_max_storage_id; id++)
    - if (!test_bit(id, sclp_storage_ids))
    - sclp_attach_storage(id);
    + for_each_clear_bit(id, sclp_storage_ids, sclp_max_storage_id + 1)
    + sclp_attach_storage(id);
    switch (action) {
    case MEM_ONLINE:
    case MEM_GOING_OFFLINE:
    --
    1.7.4.4


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