diff options
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index aeda5268244..d427daeef51 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -53,6 +53,7 @@ #include <linux/genhd.h> #include <linux/hdreg.h> #include <linux/interrupt.h> +#include <linux/log2.h> #include <asm/ccwdev.h> #include <linux/workqueue.h> #include <asm/debug.h> @@ -456,7 +457,7 @@ dasd_free_chunk(struct list_head *chunk_list, void *mem) static inline int dasd_check_blocksize(int bsize) { - if (bsize < 512 || bsize > 4096 || (bsize & (bsize - 1)) != 0) + if (bsize < 512 || bsize > 4096 || !is_power_of_2(bsize)) return -EMEDIUMTYPE; return 0; } |