diff options
| -rw-r--r-- | drivers/block/rd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 82f4eecc8699..06e23be70904 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -56,6 +56,7 @@ #include <linux/backing-dev.h> #include <linux/blkpg.h> #include <linux/writeback.h> +#include <linux/log2.h> #include <asm/uaccess.h> @@ -450,7 +451,7 @@ static int __init rd_init(void) err = -ENOMEM; if (rd_blocksize > PAGE_SIZE || rd_blocksize < 512 || - (rd_blocksize & (rd_blocksize-1))) { + !is_power_of_2(rd_blocksize)) { printk("RAMDISK: wrong blocksize %d, reverting to defaults\n", rd_blocksize); rd_blocksize = BLOCK_SIZE; |