Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb

[pandora-kernel.git] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 482df94..1338469 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -996,3 +996,25 @@ int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
        return 0;
 }
 EXPORT_SYMBOL(bitmap_allocate_region);
+
+/**
+ * bitmap_copy_le - copy a bitmap, putting the bits into little-endian order.
+ * @dst:   destination buffer
+ * @src:   bitmap to copy
+ * @nbits: number of bits in the bitmap
+ *
+ * Require nbits % BITS_PER_LONG == 0.
+ */
+void bitmap_copy_le(void *dst, const unsigned long *src, int nbits)
+{
+       unsigned long *d = dst;
+       int i;
+
+       for (i = 0; i < nbits/BITS_PER_LONG; i++) {
+               if (BITS_PER_LONG == 64)
+                       d[i] = cpu_to_le64(src[i]);
+               else
+                       d[i] = cpu_to_le32(src[i]);
+       }
+}
+EXPORT_SYMBOL(bitmap_copy_le);