staging: dgrp: cleanup sparse warnings

A cleanup patch to remove sparse warnings caused by my other patch
"procfs: Improve Scaling in proc" since now proc_fops is protected by the rcu.
Signed-off-by: NNathan Zimmer <nzimmer@sgi.com>
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgrp/dgrp_dpa_ops.c

@@ -116,7 +116,7 @@ void dgrp_register_dpa_hook(struct proc_dir_entry *de)
 	struct nd_struct *node = de->data;
 
 	de->proc_iops = &dpa_inode_ops;
-	de->proc_fops = &dpa_ops;
+	rcu_assign_pointer(de->proc_fops, &dpa_ops);
 
 	node->nd_dpa_de = de;
 	spin_lock_init(&node->nd_dpa_lock);

drivers/staging/dgrp/dgrp_mon_ops.c

@@ -66,7 +66,7 @@ void dgrp_register_mon_hook(struct proc_dir_entry *de)
 	struct nd_struct *node = de->data;
 
 	de->proc_iops = &mon_inode_ops;
-	de->proc_fops = &mon_ops;
+	rcu_assign_pointer(de->proc_fops, &mon_ops);
 	node->nd_mon_de = de;
 	sema_init(&node->nd_mon_semaphore, 1);
 }

drivers/staging/dgrp/dgrp_net_ops.c

@@ -91,7 +91,7 @@ void dgrp_register_net_hook(struct proc_dir_entry *de)
 	struct nd_struct *node = de->data;
 
 	de->proc_iops = &net_inode_ops;
-	de->proc_fops = &net_ops;
+	rcu_assign_pointer(de->proc_fops, &net_ops);
 	node->nd_net_de = de;
 	sema_init(&node->nd_net_semaphore, 1);
 	node->nd_state = NS_CLOSED;

drivers/staging/dgrp/dgrp_ports_ops.c

@@ -65,7 +65,7 @@ void dgrp_register_ports_hook(struct proc_dir_entry *de)
 	struct nd_struct *node = de->data;
 
 	de->proc_iops = &ports_inode_ops;
-	de->proc_fops = &ports_ops;
+	rcu_assign_pointer(de->proc_fops, &ports_ops);
 	node->nd_ports_de = de;
 }
 

drivers/staging/dgrp/dgrp_specproc.c

@@ -271,9 +271,11 @@ static void register_proc_table(struct dgrp_proc_entry *table,
 			if (!table->child) {
 				de->proc_iops = &proc_inode_ops;
 				if (table->proc_file_ops)
-					de->proc_fops = table->proc_file_ops;
+					rcu_assign_pointer(de->proc_fops,
+							table->proc_file_ops);
 				else
-					de->proc_fops = &dgrp_proc_file_ops;
+					rcu_assign_pointer(de->proc_fops,
+							 &dgrp_proc_file_ops);
 			}
 		}
 		table->de = de;