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

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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Yury Norov <ynorov@caviumnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2018-08-21 21:56:59 -07:00 committed by Linus Torvalds
parent 0fbd75fd7f
commit ccf7a6d457
1 changed files with 1 additions and 8 deletions
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9
lib/bitmap.c
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@ -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);