diff --git a/drivers/staging/meilhaus/me1600_ao.c b/drivers/staging/meilhaus/me1600_ao.c
index d127c6b003074ab523d2d54a1e2e424e56d8e7d2..52b3b03d7644cb7954ae7251623d54408f73f29f 100644
--- a/drivers/staging/meilhaus/me1600_ao.c
+++ b/drivers/staging/meilhaus/me1600_ao.c
@@ -756,7 +756,9 @@ static int me1600_ao_io_single_write(me_subdevice_t * subdevice,
 	queue_delayed_work(instance->me1600_workqueue,
 			   &instance->ao_control_task, 1);
 
-	if ((!flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING) && ((instance->ao_regs_shadows)->trigger & instance->ao_idx)) {	//Blocking mode. Wait for software trigger.
+	if ((!(flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING)) &&
+	    ((instance->ao_regs_shadows)->trigger & instance->ao_idx)) {
+		/* Blocking mode. Wait for software trigger. */
 		if (time_out) {
 			delay = (time_out * HZ) / 1000;
 			if (delay == 0)
diff --git a/drivers/staging/meilhaus/me4600_ao.c b/drivers/staging/meilhaus/me4600_ao.c
index e2bec8229abd73e466d0c5ba239d951f15452d77..2571caf7530ce1ca99b1194a9c901337b5b4a682 100644
--- a/drivers/staging/meilhaus/me4600_ao.c
+++ b/drivers/staging/meilhaus/me4600_ao.c
@@ -1025,7 +1025,7 @@ static int me4600_ao_io_stream_config(me_subdevice_t * subdevice,
 	}
 
 	if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) {
-		if (!flags & ME_IO_STREAM_CONFIG_WRAPAROUND) {
+		if (!(flags & ME_IO_STREAM_CONFIG_WRAPAROUND)) {
 			PERROR
 			    ("Hardware ME_IO_STREAM_CONFIG_HARDWARE_ONLY has to be with ME_IO_STREAM_CONFIG_WRAPAROUND.\n");
 			return ME_ERRNO_INVALID_FLAGS;
diff --git a/drivers/staging/meilhaus/me6000_ao.c b/drivers/staging/meilhaus/me6000_ao.c
index 94f01231f79ab48e9897fe934c3da1ecc2cc8b4f..e1c94cb71677114663cf168012538360a248f3bc 100644
--- a/drivers/staging/meilhaus/me6000_ao.c
+++ b/drivers/staging/meilhaus/me6000_ao.c
@@ -1063,7 +1063,7 @@ static int me6000_ao_io_stream_config(me_subdevice_t * subdevice,
 	}
 
 	if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) {
-		if (!flags & ME_IO_STREAM_CONFIG_WRAPAROUND) {
+		if (!(flags & ME_IO_STREAM_CONFIG_WRAPAROUND)) {
 			PERROR
 			    ("Hardware ME_IO_STREAM_CONFIG_HARDWARE_ONLY has to be with ME_IO_STREAM_CONFIG_WRAPAROUND.\n");
 			return ME_ERRNO_INVALID_FLAGS;