TTY: simserial, properly refcount tty_port->tty (3a5c2423) · Commits · 戴 / test

arch/ia64/hp/sim/simserial.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -107,7 +107,7 @@ static void receive_chars(struct tty_struct *tty)
		static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
		{
		struct serial_state *info = dev_id;
		struct tty_struct *tty = info->port.tty;
		struct tty_struct *tty = tty_port_tty_get(&info->port);

		if (!tty) {
		printk(KERN_INFO "simrs_interrupt_single: info\|tty=0 info=%p problem\n", info);
		@@ -118,6 +118,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
		* on inbound traffic
		*/
		receive_chars(tty);
		tty_kref_put(tty);
		return IRQ_HANDLED;
		}

		@@ -443,9 +444,9 @@ static void rs_close(struct tty_struct tty, struct file filp)
		*/
		shutdown(tty, info);
		rs_flush_buffer(tty);
		port->tty = NULL;

		tty_port_close_end(port, tty);
		tty_port_tty_set(port, NULL);
		}

		/*
		@@ -467,7 +468,7 @@ static void rs_hangup(struct tty_struct *tty)

		port->count = 0;
		port->flags &= ~ASYNC_NORMAL_ACTIVE;
		port->tty = NULL;
		tty_port_tty_set(port, NULL);
		wake_up_interruptible(&port->open_wait);
		}

		@@ -556,7 +557,7 @@ static int rs_open(struct tty_struct tty, struct file filp)
		int retval;

		port->count++;
		port->tty = tty;
		tty_port_tty_set(port, tty);
		tty->driver_data = info;
		tty->port = port;