[PATCH] 9p: fix bogus return code checks during initialization

There is a simple logic error in init_v9fs - the return code checks are
reversed. This patch fixes the return code and adds some messages to prevent
module initialization from failing silently.

Signed-off-by: Eric Van Hensbergen <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/9p/mux.c

···
 		v9fs_mux_poll_tasks[i].task = NULL;
 
 	v9fs_mux_wq = create_workqueue("v9fs");
-	if (!v9fs_mux_wq)
+	if (!v9fs_mux_wq) {
+		printk(KERN_WARNING "v9fs: mux: creating workqueue failed\n");
 		return -ENOMEM;
+	}
 
 	return 0;
 }

fs/9p/v9fs.c

···
 
 	v9fs_error_init();
 
-	printk(KERN_INFO "Installing v9fs 9P2000 file system support\n");
+	printk(KERN_INFO "Installing v9fs 9p2000 file system support\n");
 
 	ret = v9fs_mux_global_init();
-	if (!ret)
+	if (ret) {
+		printk(KERN_WARNING "v9fs: starting mux failed\n");
 		return ret;
+	}
 	ret = register_filesystem(&v9fs_fs_type);
-	if (!ret)
+	if (ret) {
+		printk(KERN_WARNING "v9fs: registering file system failed\n");
 		v9fs_mux_global_exit();
+	}
+
 	return ret;
 }