fs/ncpfs: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jan Kara <jack@suse.cz>

fs/ncpfs/inode.c

@@ -618,7 +618,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 	server->tx.creq		= NULL;
 	server->rcv.creq	= NULL;
 
-	init_timer(&server->timeout_tm);
+	timer_setup(&server->timeout_tm, ncpdgram_timeout_call, 0);
 #undef NCP_PACKET_SIZE
 #define NCP_PACKET_SIZE 131072
 	error = -ENOMEM;
@@ -650,8 +650,6 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 	} else {
 		INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
 		INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
-		server->timeout_tm.data = (unsigned long)server;
-		server->timeout_tm.function = ncpdgram_timeout_call;
 	}
 	release_sock(sock->sk);
 

fs/ncpfs/ncp_fs_sb.h

@@ -149,7 +149,7 @@ extern void ncp_tcp_rcv_proc(struct work_struct *work);
 extern void ncp_tcp_tx_proc(struct work_struct *work);
 extern void ncpdgram_rcv_proc(struct work_struct *work);
 extern void ncpdgram_timeout_proc(struct work_struct *work);
-extern void ncpdgram_timeout_call(unsigned long server);
+extern void ncpdgram_timeout_call(struct timer_list *t);
 extern void ncp_tcp_data_ready(struct sock* sk);
 extern void ncp_tcp_write_space(struct sock* sk);
 extern void ncp_tcp_error_report(struct sock* sk);

fs/ncpfs/sock.c

@@ -116,9 +116,9 @@ void ncp_tcp_write_space(struct sock *sk)
 		schedule_work(&server->tx.tq);
 }
 
-void ncpdgram_timeout_call(unsigned long v)
+void ncpdgram_timeout_call(struct timer_list *t)
 {
-	struct ncp_server *server = (void*)v;
+	struct ncp_server *server = from_timer(server, t, timeout_tm);
 
 	schedule_work(&server->timeout_tq);
 }