Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

[karo-tx-linux.git] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index ce2ec80bf4315e55057b4514e5435af454ca8cac..1e031f2c9aba1ba4f536147ef5a2adbc6954addb 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -223,11 +223,14 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
                                const unsigned long *bitmap2, unsigned int bits)
 {
        unsigned int k;
-       unsigned int nr = BITS_TO_LONGS(bits);
+       unsigned int lim = bits/BITS_PER_LONG;
        unsigned long result = 0;
 
-       for (k = 0; k < nr; k++)
+       for (k = 0; k < lim; k++)
                result |= (dst[k] = bitmap1[k] & ~bitmap2[k]);
+       if (bits % BITS_PER_LONG)
+               result |= (dst[k] = bitmap1[k] & ~bitmap2[k] &
+                          BITMAP_LAST_WORD_MASK(bits));
        return result != 0;
 }
 EXPORT_SYMBOL(__bitmap_andnot);