diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2012-10-12 10:22:25 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-10-18 17:50:08 +0200 |
| commit | aa92b33c6b93b5ef4ccbaa72afa9c387a96c2ee2 (patch) | |
| tree | 8a78109e3bda649b028f7f0d100efdfe17aadfce /drivers/s390 | |
| parent | 4e860696e050375ae7fbb06984c19e2bf6a322e0 (diff) | |
s390/cio: use generic bitmap functions
Use generic bitmap functions in the subchannel id bitmap to
simplify and de-bloat the code.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/idset.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index e6d5f8c49524..f0973a04ec49 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -1,9 +1,10 @@ /* - * Copyright IBM Corp. 2007 + * Copyright IBM Corp. 2007, 2012 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ #include <linux/vmalloc.h> +#include <linux/bitmap.h> #include <linux/bitops.h> #include "idset.h" #include "css.h" @@ -111,20 +112,13 @@ int idset_sch_get_first(struct idset *set, struct subchannel_id *schid) int idset_is_empty(struct idset *set) { - int bitnum; - - bitnum = find_first_bit(set->bitmap, set->num_ssid * set->num_id); - if (bitnum >= set->num_ssid * set->num_id) - return 1; - return 0; + return bitmap_empty(set->bitmap, set->num_ssid * set->num_id); } void idset_add_set(struct idset *to, struct idset *from) { - unsigned long i, len; + int len = min(__BITOPS_WORDS(to->num_ssid * to->num_id), + __BITOPS_WORDS(from->num_ssid * from->num_id)); - len = min(__BITOPS_WORDS(to->num_ssid * to->num_id), - __BITOPS_WORDS(from->num_ssid * from->num_id)); - for (i = 0; i < len ; i++) - to->bitmap[i] |= from->bitmap[i]; + bitmap_or(to->bitmap, to->bitmap, from->bitmap, len); } |