[S390] is_power_of_2 in drivers/s390/block/dasd_int.h (e108cebb) · Commits · 戴 / test

Replacing n & (n - 1) for power of 2 check by is_power_of_2(n) Signed-off-by:

drivers/s390/block/dasd_int.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}