--- zzzz-none-000/linux-3.10.107/net/irda/ircomm/ircomm_tty.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/irda/ircomm/ircomm_tty.c	2021-02-04 17:41:59.000000000 +0000
@@ -24,9 +24,7 @@
  *     GNU General Public License for more details.
  *
  *     You should have received a copy of the GNU General Public License
- *     along with this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- *     MA 02111-1307 USA
+ *     along with this program; if not, see <http://www.gnu.org/licenses/>.
  *
  ********************************************************************/
 
@@ -149,7 +147,8 @@
 		return -ENOMEM;
 	ircomm_tty = hashbin_new(HB_LOCK);
 	if (ircomm_tty == NULL) {
-		IRDA_ERROR("%s(), can't allocate hashbin!\n", __func__);
+		net_err_ratelimited("%s(), can't allocate hashbin!\n",
+				    __func__);
 		put_tty_driver(driver);
 		return -ENOMEM;
 	}
@@ -165,8 +164,8 @@
 	driver->flags           = TTY_DRIVER_REAL_RAW;
 	tty_set_operations(driver, &ops);
 	if (tty_register_driver(driver)) {
-		IRDA_ERROR("%s(): Couldn't register serial driver\n",
-			   __func__);
+		net_err_ratelimited("%s(): Couldn't register serial driver\n",
+				    __func__);
 		put_tty_driver(driver);
 		return -1;
 	}
@@ -175,8 +174,6 @@
 
 static void __exit __ircomm_tty_cleanup(struct ircomm_tty_cb *self)
 {
-	IRDA_DEBUG(0, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -197,12 +194,10 @@
 {
 	int ret;
 
-	IRDA_DEBUG(4, "%s()\n", __func__ );
-
 	ret = tty_unregister_driver(driver);
 	if (ret) {
-		IRDA_ERROR("%s(), failed to unregister driver\n",
-			   __func__);
+		net_err_ratelimited("%s(), failed to unregister driver\n",
+				    __func__);
 		return;
 	}
 
@@ -221,14 +216,12 @@
 	notify_t notify;
 	int ret = -ENODEV;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return -1;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
 
 	/* Check if already open */
 	if (test_and_set_bit(ASYNCB_INITIALIZED, &self->port.flags)) {
-		IRDA_DEBUG(2, "%s(), already open so break out!\n", __func__ );
+		pr_debug("%s(), already open so break out!\n", __func__);
 		return 0;
 	}
 
@@ -258,7 +251,7 @@
 	/* Connect IrCOMM link with remote device */
 	ret = ircomm_tty_attach_cable(self);
 	if (ret < 0) {
-		IRDA_ERROR("%s(), error attaching cable!\n", __func__);
+		net_err_ratelimited("%s(), error attaching cable!\n", __func__);
 		goto err;
 	}
 
@@ -283,8 +276,6 @@
 	int		do_clocal = 0;
 	unsigned long	flags;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	/*
 	 * If non-blocking mode is set, or the port is not enabled,
 	 * then make the check up front and then exit.
@@ -299,12 +290,12 @@
 		if (tty->termios.c_cflag & CBAUD)
 			tty_port_raise_dtr_rts(port);
 		port->flags |= ASYNC_NORMAL_ACTIVE;
-		IRDA_DEBUG(1, "%s(), O_NONBLOCK requested!\n", __func__ );
+		pr_debug("%s(), O_NONBLOCK requested!\n", __func__);
 		return 0;
 	}
 
 	if (tty->termios.c_cflag & CLOCAL) {
-		IRDA_DEBUG(1, "%s(), doing CLOCAL!\n", __func__ );
+		pr_debug("%s(), doing CLOCAL!\n", __func__);
 		do_clocal = 1;
 	}
 
@@ -318,12 +309,11 @@
 	retval = 0;
 	add_wait_queue(&port->open_wait, &wait);
 
-	IRDA_DEBUG(2, "%s(%d):block_til_ready before block on %s open_count=%d\n",
-	      __FILE__, __LINE__, tty->driver->name, port->count);
+	pr_debug("%s(%d):block_til_ready before block on %s open_count=%d\n",
+		 __FILE__, __LINE__, tty->driver->name, port->count);
 
 	spin_lock_irqsave(&port->lock, flags);
-	if (!tty_hung_up_p(filp))
-		port->count--;
+	port->count--;
 	port->blocked_open++;
 	spin_unlock_irqrestore(&port->lock, flags);
 
@@ -345,8 +335,7 @@
 		 * specified, we cannot return before the IrCOMM link is
 		 * ready
 		 */
-		if (!test_bit(ASYNCB_CLOSING, &port->flags) &&
-		    (do_clocal || tty_port_carrier_raised(port)) &&
+		if ((do_clocal || tty_port_carrier_raised(port)) &&
 		    self->state == IRCOMM_TTY_READY)
 		{
 			break;
@@ -357,8 +346,8 @@
 			break;
 		}
 
-		IRDA_DEBUG(1, "%s(%d):block_til_ready blocking on %s open_count=%d\n",
-		      __FILE__, __LINE__, tty->driver->name, port->count);
+		pr_debug("%s(%d):block_til_ready blocking on %s open_count=%d\n",
+			 __FILE__, __LINE__, tty->driver->name, port->count);
 
 		schedule();
 	}
@@ -372,8 +361,8 @@
 	port->blocked_open--;
 	spin_unlock_irqrestore(&port->lock, flags);
 
-	IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n",
-	      __FILE__, __LINE__, tty->driver->name, port->count);
+	pr_debug("%s(%d):block_til_ready after blocking on %s open_count=%d\n",
+		 __FILE__, __LINE__, tty->driver->name, port->count);
 
 	if (!retval)
 		port->flags |= ASYNC_NORMAL_ACTIVE;
@@ -392,10 +381,8 @@
 	if (!self) {
 		/* No, so make new instance */
 		self = kzalloc(sizeof(struct ircomm_tty_cb), GFP_KERNEL);
-		if (self == NULL) {
-			IRDA_ERROR("%s(), kmalloc failed!\n", __func__);
+		if (self == NULL)
 			return -ENOMEM;
-		}
 
 		tty_port_init(&self->port);
 		self->port.ops = &ircomm_port_ops;
@@ -443,58 +430,27 @@
 	unsigned long	flags;
 	int ret;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	/* ++ is not atomic, so this should be protected - Jean II */
 	spin_lock_irqsave(&self->port.lock, flags);
 	self->port.count++;
 	spin_unlock_irqrestore(&self->port.lock, flags);
 	tty_port_tty_set(&self->port, tty);
 
-	IRDA_DEBUG(1, "%s(), %s%d, count = %d\n", __func__ , tty->driver->name,
-		   self->line, self->port.count);
+	pr_debug("%s(), %s%d, count = %d\n", __func__ , tty->driver->name,
+		 self->line, self->port.count);
 
 	/* Not really used by us, but lets do it anyway */
 	self->port.low_latency = (self->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 
-	/*
-	 * If the port is the middle of closing, bail out now
-	 */
-	if (tty_hung_up_p(filp) ||
-	    test_bit(ASYNCB_CLOSING, &self->port.flags)) {
-
-		/* Hm, why are we blocking on ASYNC_CLOSING if we
-		 * do return -EAGAIN/-ERESTARTSYS below anyway?
-		 * IMHO it's either not needed in the first place
-		 * or for some reason we need to make sure the async
-		 * closing has been finished - if so, wouldn't we
-		 * probably better sleep uninterruptible?
-		 */
-
-		if (wait_event_interruptible(self->port.close_wait,
-				!test_bit(ASYNCB_CLOSING, &self->port.flags))) {
-			IRDA_WARNING("%s - got signal while blocking on ASYNC_CLOSING!\n",
-				     __func__);
-			return -ERESTARTSYS;
-		}
-
-#ifdef SERIAL_DO_RESTART
-		return (self->port.flags & ASYNC_HUP_NOTIFY) ?
-			-EAGAIN : -ERESTARTSYS;
-#else
-		return -EAGAIN;
-#endif
-	}
-
 	/* Check if this is a "normal" ircomm device, or an irlpt device */
 	if (self->line < 0x10) {
 		self->service_type = IRCOMM_3_WIRE | IRCOMM_9_WIRE;
 		self->settings.service_type = IRCOMM_9_WIRE; /* 9 wire as default */
 		/* Jan Kiszka -> add DSR/RI -> Conform to IrCOMM spec */
 		self->settings.dce = IRCOMM_CTS | IRCOMM_CD | IRCOMM_DSR | IRCOMM_RI; /* Default line settings */
-		IRDA_DEBUG(2, "%s(), IrCOMM device\n", __func__ );
+		pr_debug("%s(), IrCOMM device\n", __func__);
 	} else {
-		IRDA_DEBUG(2, "%s(), IrLPT device\n", __func__ );
+		pr_debug("%s(), IrLPT device\n", __func__);
 		self->service_type = IRCOMM_3_WIRE_RAW;
 		self->settings.service_type = IRCOMM_3_WIRE_RAW; /* Default */
 	}
@@ -505,9 +461,8 @@
 
 	ret = ircomm_tty_block_til_ready(self, tty, filp);
 	if (ret) {
-		IRDA_DEBUG(2,
-		      "%s(), returning after block_til_ready with %d\n", __func__ ,
-		      ret);
+		pr_debug("%s(), returning after block_til_ready with %d\n",
+			 __func__, ret);
 
 		return ret;
 	}
@@ -525,8 +480,6 @@
 	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
 	struct tty_port *port = &self->port;
 
-	IRDA_DEBUG(0, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -576,8 +529,6 @@
 	unsigned long flags;
 	struct sk_buff *skb, *ctrl_skb;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	if (!self || self->magic != IRCOMM_TTY_MAGIC)
 		return;
 
@@ -643,8 +594,8 @@
 	int len = 0;
 	int size;
 
-	IRDA_DEBUG(2, "%s(), count=%d, hw_stopped=%d\n", __func__ , count,
-		   tty->hw_stopped);
+	pr_debug("%s(), count=%d, hw_stopped=%d\n", __func__ , count,
+		 tty->hw_stopped);
 
 	IRDA_ASSERT(self != NULL, return -1;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
@@ -666,7 +617,7 @@
 	 * we don't mess up the original "safe skb" (see tx_data_size).
 	 * Jean II */
 	if (self->max_header_size == IRCOMM_TTY_HDR_UNINITIALISED) {
-		IRDA_DEBUG(1, "%s() : not initialised\n", __func__);
+		pr_debug("%s() : not initialised\n", __func__);
 #ifdef IRCOMM_NO_TX_BEFORE_INIT
 		/* We didn't consume anything, TTY will retry */
 		return 0;
@@ -795,7 +746,7 @@
 			ret = self->max_data_size;
 		spin_unlock_irqrestore(&self->spinlock, flags);
 	}
-	IRDA_DEBUG(2, "%s(), ret=%d\n", __func__ , ret);
+	pr_debug("%s(), ret=%d\n", __func__ , ret);
 
 	return ret;
 }
@@ -812,8 +763,6 @@
 	unsigned long orig_jiffies, poll_time;
 	unsigned long flags;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -835,7 +784,7 @@
 			break;
 	}
 	spin_unlock_irqrestore(&self->spinlock, flags);
-	current->state = TASK_RUNNING;
+	__set_current_state(TASK_RUNNING);
 }
 
 /*
@@ -849,8 +798,6 @@
 {
 	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -880,8 +827,6 @@
 {
 	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -895,7 +840,7 @@
 		self->settings.dte |= (IRCOMM_RTS|IRCOMM_DELTA_RTS);
 
 		ircomm_param_request(self, IRCOMM_DTE, TRUE);
-		IRDA_DEBUG(1, "%s(), FLOW_START\n", __func__ );
+		pr_debug("%s(), FLOW_START\n", __func__);
 	}
 	ircomm_flow_request(self->ircomm, FLOW_START);
 }
@@ -932,8 +877,6 @@
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
-	IRDA_DEBUG(0, "%s()\n", __func__ );
-
 	if (!test_and_clear_bit(ASYNCB_INITIALIZED, &self->port.flags))
 		return;
 
@@ -976,8 +919,6 @@
 	struct tty_port *port = &self->port;
 	unsigned long	flags;
 
-	IRDA_DEBUG(0, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -1005,7 +946,7 @@
  */
 static void ircomm_tty_send_xchar(struct tty_struct *tty, char ch)
 {
-	IRDA_DEBUG(0, "%s(), not impl\n", __func__ );
+	pr_debug("%s(), not impl\n", __func__);
 }
 
 /*
@@ -1049,8 +990,6 @@
 	struct tty_struct *tty;
 	int status;
 
-	IRDA_DEBUG(0, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
@@ -1062,15 +1001,13 @@
 		/*wake_up_interruptible(&self->delta_msr_wait);*/
 	}
 	if ((self->port.flags & ASYNC_CHECK_CD) && (status & IRCOMM_DELTA_CD)) {
-		IRDA_DEBUG(2,
-			   "%s(), ircomm%d CD now %s...\n", __func__ , self->line,
-			   (status & IRCOMM_CD) ? "on" : "off");
+		pr_debug("%s(), ircomm%d CD now %s...\n", __func__ , self->line,
+			 (status & IRCOMM_CD) ? "on" : "off");
 
 		if (status & IRCOMM_CD) {
 			wake_up_interruptible(&self->port.open_wait);
 		} else {
-			IRDA_DEBUG(2,
-				   "%s(), Doing serial hangup..\n", __func__ );
+			pr_debug("%s(), Doing serial hangup..\n", __func__);
 			if (tty)
 				tty_hangup(tty);
 
@@ -1081,8 +1018,7 @@
 	if (tty && tty_port_cts_enabled(&self->port)) {
 		if (tty->hw_stopped) {
 			if (status & IRCOMM_CTS) {
-				IRDA_DEBUG(2,
-					   "%s(), CTS tx start...\n", __func__ );
+				pr_debug("%s(), CTS tx start...\n", __func__);
 				tty->hw_stopped = 0;
 
 				/* Wake up processes blocked on open */
@@ -1093,8 +1029,7 @@
 			}
 		} else {
 			if (!(status & IRCOMM_CTS)) {
-				IRDA_DEBUG(2,
-					   "%s(), CTS tx stop...\n", __func__ );
+				pr_debug("%s(), CTS tx stop...\n", __func__);
 				tty->hw_stopped = 1;
 			}
 		}
@@ -1115,15 +1050,13 @@
 	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
 	struct tty_struct *tty;
 
-	IRDA_DEBUG(2, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return -1;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
 	IRDA_ASSERT(skb != NULL, return -1;);
 
 	tty = tty_port_tty_get(&self->port);
 	if (!tty) {
-		IRDA_DEBUG(0, "%s(), no tty!\n", __func__ );
+		pr_debug("%s(), no tty!\n", __func__);
 		return 0;
 	}
 
@@ -1134,7 +1067,7 @@
 	 * params, we can just as well declare the hardware for running.
 	 */
 	if (tty->hw_stopped && (self->flow == FLOW_START)) {
-		IRDA_DEBUG(0, "%s(), polling for line settings!\n", __func__ );
+		pr_debug("%s(), polling for line settings!\n", __func__);
 		ircomm_param_request(self, IRCOMM_POLL, TRUE);
 
 		/* We can just as well declare the hardware for running */
@@ -1167,8 +1100,6 @@
 	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
 	int clen;
 
-	IRDA_DEBUG(4, "%s()\n", __func__ );
-
 	IRDA_ASSERT(self != NULL, return -1;);
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
 	IRDA_ASSERT(skb != NULL, return -1;);
@@ -1203,7 +1134,7 @@
 
 	switch (cmd) {
 	case FLOW_START:
-		IRDA_DEBUG(2, "%s(), hw start!\n", __func__ );
+		pr_debug("%s(), hw start!\n", __func__);
 		if (tty)
 			tty->hw_stopped = 0;
 
@@ -1212,7 +1143,7 @@
 		break;
 	default:  /* If we get here, something is very wrong, better stop */
 	case FLOW_STOP:
-		IRDA_DEBUG(2, "%s(), hw stopped!\n", __func__ );
+		pr_debug("%s(), hw stopped!\n", __func__);
 		if (tty)
 			tty->hw_stopped = 1;
 		break;