1 files changed, 11 insertions, 1 deletions

diff --git a/include/qemu/bitops.h b/include/qemu/bitops.h
index 340b1e7..7e2d5c9 100644
--- a/include/qemu/bitops.h
+++ b/include/qemu/bitops.h
@@ -157,7 +157,17 @@ unsigned long find_next_zero_bit(const unsigned long *addr,
 static inline unsigned long find_first_bit(const unsigned long *addr,
                                            unsigned long size)
 {
-    return find_next_bit(addr, size, 0);
+    unsigned long result, tmp;
+
+    for (result = 0; result < size; result += BITS_PER_LONG) {
+        tmp = *addr++;
+        if (tmp) {
+            result += ctzl(tmp);
+            return result < size ? result : size;
+        }
+    }
+    /* Not found */
+    return size;
 }
 
 /**