diff --git a/MAINTAINERS b/MAINTAINERS
index d164cc317b63e106e3489445785bd724c7b56a47..fca970a46e77af110ed1d592f40567c82334b12d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -16833,8 +16833,8 @@ F:	drivers/video/fbdev/savage/
 S390
 M:	Heiko Carstens <hca@linux.ibm.com>
 M:	Vasily Gorbik <gor@linux.ibm.com>
-M:	Christian Borntraeger <borntraeger@linux.ibm.com>
-R:	Alexander Gordeev <agordeev@linux.ibm.com>
+M:	Alexander Gordeev <agordeev@linux.ibm.com>
+R:	Christian Borntraeger <borntraeger@linux.ibm.com>
 R:	Sven Schnelle <svens@linux.ibm.com>
 L:	linux-s390@vger.kernel.org
 S:	Supported
diff --git a/arch/s390/lib/test_modules.c b/arch/s390/lib/test_modules.c
index d056baa8fbb0cf9588722dfdf662858493383411..9894009fc1f25c78814f146ce1908a49dbfb4330 100644
--- a/arch/s390/lib/test_modules.c
+++ b/arch/s390/lib/test_modules.c
@@ -5,9 +5,6 @@
 
 #include "test_modules.h"
 
-#define DECLARE_RETURN(i) int test_modules_return_ ## i(void)
-REPEAT_10000(DECLARE_RETURN);
-
 /*
  * Test that modules with many relocations are loaded properly.
  */
diff --git a/arch/s390/lib/test_modules.h b/arch/s390/lib/test_modules.h
index 43b5e4b4af3e430d6d026c3225fb806855bff664..6371fcf1768456873fa0d8dbe7819faeef4ecf38 100644
--- a/arch/s390/lib/test_modules.h
+++ b/arch/s390/lib/test_modules.h
@@ -47,4 +47,7 @@
 	__REPEAT_10000_1(f, 8); \
 	__REPEAT_10000_1(f, 9)
 
+#define DECLARE_RETURN(i) int test_modules_return_ ## i(void)
+REPEAT_10000(DECLARE_RETURN);
+
 #endif
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index cd938a26b76c2396632edd5196b295dcddc4c7e5..3b1cd0c96a74b85d53f218ec517fc3eb525b0524 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1180,7 +1180,7 @@ static int io_subchannel_chp_event(struct subchannel *sch,
 			else
 				path_event[chpid] = PE_NONE;
 		}
-		if (cdev)
+		if (cdev && cdev->drv && cdev->drv->path_event)
 			cdev->drv->path_event(cdev, path_event);
 		break;
 	}