X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Ftty%2Fserial%2Fcrisv10.c;h=58e6f61a87e4fe5a747a3f0777446ee702621a73;hb=e359a4e38d229d53e28905863a1fabf41debd591;hp=d567ac5d3af4dcc5a0b8411fef6fab8a7e0d51a9;hpb=5fda7a0e715c32c6dd9a39ebce8429eeafb64b7d;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index d567ac5d3af4..58e6f61a87e4 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -3831,14 +3831,13 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
 	DECLARE_WAITQUEUE(wait, current);
 	unsigned long	flags;
 	int		retval;
-	int		do_clocal = 0, extra_count = 0;
+	int		do_clocal = 0;
 
 	/*
 	 * If the device is in the middle of being closed, then block
 	 * until it's done, and then try again.
 	 */
-	if (tty_hung_up_p(filp) ||
-	    (info->port.flags & ASYNC_CLOSING)) {
+	if (info->port.flags & ASYNC_CLOSING) {
 		wait_event_interruptible_tty(tty, info->port.close_wait,
 			!(info->port.flags & ASYNC_CLOSING));
 #ifdef SERIAL_DO_RESTART
@@ -3879,10 +3878,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
 	       info->line, info->port.count);
 #endif
 	local_irq_save(flags);
-	if (!tty_hung_up_p(filp)) {
-		extra_count++;
-		info->port.count--;
-	}
+	info->port.count--;
 	local_irq_restore(flags);
 	info->port.blocked_open++;
 	while (1) {
@@ -3921,7 +3917,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
 	}
 	set_current_state(TASK_RUNNING);
 	remove_wait_queue(&info->port.open_wait, &wait);
-	if (extra_count)
+	if (!tty_hung_up_p(filp))
 		info->port.count++;
 	info->port.blocked_open--;
 #ifdef SERIAL_DEBUG_OPEN
@@ -3976,8 +3972,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
 	/*
 	 * If the port is in the middle of closing, bail out now
 	 */
-	if (tty_hung_up_p(filp) ||
-	    (info->port.flags & ASYNC_CLOSING)) {
+	if (info->port.flags & ASYNC_CLOSING) {
 		wait_event_interruptible_tty(tty, info->port.close_wait,
 			!(info->port.flags & ASYNC_CLOSING));
 #ifdef SERIAL_DO_RESTART