1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index e7db054fb1c8..6babb72b39fc 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -781,7 +781,7 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
 {
         struct ib_umad_port *port;
         struct ib_umad_file *file;
-        int ret = 0;
+        int ret;
 
         port = container_of(inode->i_cdev, struct ib_umad_port, cdev);
         if (port)
@@ -814,6 +814,8 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
 
         list_add_tail(&file->port_list, &port->file_list);
 
+        ret = nonseekable_open(inode, filp);
+
 out:
         mutex_unlock(&port->file_mutex);
         return ret;
@@ -866,7 +868,8 @@ static const struct file_operations umad_fops = {
         .compat_ioctl   = ib_umad_compat_ioctl,
 #endif
         .open           = ib_umad_open,
-        .release        = ib_umad_close
+        .release        = ib_umad_close,
+        .llseek         = no_llseek,
 };
 
 static int ib_umad_sm_open(struct inode *inode, struct file *filp)
@@ -903,7 +906,7 @@ static int ib_umad_sm_open(struct inode *inode, struct file *filp)
 
         filp->private_data = port;
 
-        return 0;
+        return nonseekable_open(inode, filp);
 
 fail:
         kref_put(&port->umad_dev->ref, ib_umad_release_dev);
@@ -933,7 +936,8 @@ static int ib_umad_sm_close(struct inode *inode, struct file *filp)
 static const struct file_operations umad_sm_fops = {
         .owner   = THIS_MODULE,
         .open    = ib_umad_sm_open,
-        .release = ib_umad_sm_close
+        .release = ib_umad_sm_close,
+        .llseek  = no_llseek,
 };
 
 static struct ib_client umad_client = {