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Commit ccf7a6d4 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Linus Torvalds
Browse files

lib/bitmap.c: drop unnecessary 0 check for u32 array operations 

nbits == 0 is safe to be supplied to the function body, so remove
unnecessary checks in bitmap_to_arr32() and bitmap_from_arr32().

Link: http://lkml.kernel.org/r/20180531131914.44352-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: default avatarYury Norov <ynorov@caviumnetworks.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0fbd75fd

lib/bitmap.c

+1 −8
Original line number Diff line number Diff line
@@ -1152,14 +1152,10 @@ EXPORT_SYMBOL(bitmap_free); 
 *	@buf: array of u32 (in host byte order), the source bitmap

 *	@nbits: number of bits in @bitmap

 */

void bitmap_from_arr32(unsigned long *bitmap, const u32 *buf,

						unsigned int nbits)

void bitmap_from_arr32(unsigned long *bitmap, const u32 *buf, unsigned int nbits)

{

	unsigned int i, halfwords;



	if (!nbits)

		return;



	halfwords = DIV_ROUND_UP(nbits, 32);

	for (i = 0; i < halfwords; i++) {

		bitmap[i/2] = (unsigned long) buf[i];
@@ -1183,9 +1179,6 @@ void bitmap_to_arr32(u32 *buf, const unsigned long *bitmap, unsigned int nbits) 
{

	unsigned int i, halfwords;



	if (!nbits)

		return;



	halfwords = DIV_ROUND_UP(nbits, 32);

	for (i = 0; i < halfwords; i++) {

		buf[i] = (u32) (bitmap[i/2] & UINT_MAX);