tests/ZZ_hangman: Test both error_state interfaces

Test both debugfs and sysfs error_state interfaces.

v2: sysfs error_state not mandatory

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: Update sysfs file name.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

tests/ZZ_hangman

@@ -18,25 +18,49 @@ if [ ! -f i915_ring_stop ] ; then
 	exit 77
 fi
 
-if cat i915_error_state | grep -v "no error state collected" > /dev/null ; then
+function check_iface {
-	echo "gpu hang dectected"
+    estate_fname=$1
-	exit 1
+    mandatory=$2
+
+    echo checking ${estate_fname}
+
+    if [ ! -f $estate_fname ] ; then
+	if [  $mandatory != 0 ] ; then
+	    echo "'${estate_fname}' not found";
+	    exit 1;
+	else
+	    echo "${estate_fname} not mandatory";
+	    return;
+	fi
+    fi
+
+    if cat $estate_fname | grep -v "no error state collected" > /dev/null ; then
+	echo "gpu hang detected"
+	exit 2
     fi
 
-# stop rings
     echo 0xf > i915_ring_stop
     echo "rings stopped"
 
     (cd $oldpath; $SOURCE_DIR/gem_exec_big) > /dev/null
 
-if cat i915_error_state | grep -v "no error state collected" > /dev/null ; then
+    if cat $estate_fname | grep -v "no error state collected" > /dev/null ; then
-	echo "gpu hang correctly dectected"
+	echo "gpu hang correctly detected"
     else
-	echo "gpu hang not dectected"
+	echo "gpu hang not detected"
-	exit 2
+	exit 3
     fi
 
 # clear error state
-echo > i915_error_state
+    echo > $estate_fname
+
+    if cat $estate_fname | grep -v "no error state collected" > /dev/null ; then
+	echo "gpu hang still present"
+	exit 4
+    fi
+}
+
+check_iface $i915_dfs_path/i915_error_state 1
+check_iface $i915_sfs_path/error 0
 
 exit 0