diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 91ca87aa9f973902cbe148338709ddf53974c3fc..f49f0e502b8dfb7f144801db8aa57d975a2dc7b7 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -261,7 +261,7 @@ static int chsc_examine_irb(struct chsc_request *request)
 {
 	int backed_up;
 
-	if (!scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND)
+	if (!(scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND))
 		return -EIO;
 	backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK;
 	request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK;