tests/debugfs_reader: fight bashism

debian's dash doesn't like this.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/tests/debugfs_reader b/tests/debugfs_reader
index 8874185..adb1e3c 100755 (executable)
--- a/tests/debugfs_reader
+++ b/tests/debugfs_reader
@@ -22,6 +22,6 @@ if [ $i915_path = "x" ] ; then
 fi
 
 # read everything we can
-cat $i915_path/* >& /dev/null
+cat $i915_path/* > /dev/null 2>&1 
 
 exit 0