[XFS] fix up xfs_lowbit's use of ffs

SGI Modid: 2.5.x-xfs:slinx:156655a

[XFS] fix up xfs_lowbit's use of ffs
SGI Modid: 2.5.x-xfs:slinx:156655a
539c89b8 · Stephen Lord · Stephen Lord · 9bee259b · 539c89b8
Commit 539c89b8 authored Aug 25, 2003 by Stephen Lord Committed by Stephen Lord Aug 25, 2003
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fs/xfs/xfs_bit.c fs/xfs/xfs_bit.c +2 -2

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--- a/fs/xfs/xfs_bit.c
+++ b/fs/xfs/xfs_bit.c
@@ -156,12 +156,12 @@ xfs_lowbit64(
 {
 	int n;
 	n = ffs((unsigned)v);
-	if (n == 0) {
+	if (n <= 0) {
 		n = ffs(v >> 32);
 		if (n >= 0)
 			n+=32;
 	}
-	return n-1;
+	return (n <= 0) ? n : n-1;
 }
 /*