From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 15 Jul 2016 11:17:33 +0000 (+0300)
Subject: sparc: serial: sunhv: fix a double lock bug
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=344e3c7734d5090b148c19ac6539b8947fed6767;p=linux-beck.git

sparc: serial: sunhv: fix a double lock bug

We accidentally take the "port->lock" twice in a row.  This old code
was supposed to be deleted.

Fixes: e58e241c1788 ('sparc: serial: Clean up the locking for -rt')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index ca0d3802f2af..4e603d060e80 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -490,12 +490,6 @@ static void sunhv_console_write_bychar(struct console *con, const char *s, unsig
 		locked = spin_trylock_irqsave(&port->lock, flags);
 	else
 		spin_lock_irqsave(&port->lock, flags);
-	if (port->sysrq) {
-		locked = 0;
-	} else if (oops_in_progress) {
-		locked = spin_trylock(&port->lock);
-	} else
-		spin_lock(&port->lock);
 
 	for (i = 0; i < n; i++) {
 		if (*s == '\n')