2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 3b6f4adc509..a83877c664a 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -803,6 +803,7 @@ static long chsc_ioctl(struct file *filp, unsigned int cmd,
 
 static const struct file_operations chsc_fops = {
         .owner = THIS_MODULE,
+        .open = nonseekable_open,
         .unlocked_ioctl = chsc_ioctl,
         .compat_ioctl = chsc_ioctl,
 };
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index da6df048328..ac94ac75145 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -1065,6 +1065,7 @@ static ssize_t cio_settle_write(struct file *file, const char __user *buf,
 }
 
 static const struct file_operations cio_settle_proc_fops = {
+        .open = nonseekable_open,
         .write = cio_settle_write,
 };