[PATCH] mca-proc.c: audit return code of create_proc_read_entry()

From: Christophe Lucas <clucas@rotomalug.org>

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/mca/mca-proc.c
===================================================================
--- linux-kj.orig/drivers/mca/mca-proc.c
+++ linux-kj/drivers/mca/mca-proc.c
@@ -184,8 +184,14 @@ void __init mca_do_proc_init(void)
 	struct mca_device *mca_dev;
 
 	proc_mca = proc_mkdir("mca", &proc_root);
-	create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
-	create_proc_read_entry("machine",0,proc_mca,get_mca_machine_info,NULL);
+	node = create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
+	if (!node)
+		printk(KERN_WARNING "MCA: Unable to create mca /proc entry.\n");
+	node = create_proc_read_entry("machine",0,proc_mca,
+		get_mca_machine_info,NULL);
+	if (!node)
+		printk(KERN_WARNING 
+			"MCA: Unable to create machine /proc entry.\n");
 
 	/* Initialize /proc/mca entries for existing adapters */