drivers-tty-fix-omap-lock-crap.patch

Subject: drivers-tty-fix-omap-lock-crap.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 28 Jul 2011 13:32:57 +0200

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/tty/serial/omap-serial.c |   12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

Index: linux-stable/drivers/tty/serial/omap-serial.c
===================================================================
--- linux-stable.orig/drivers/tty/serial/omap-serial.c
+++ linux-stable/drivers/tty/serial/omap-serial.c
@@ -1082,13 +1082,10 @@ serial_omap_console_write(struct console
 
 	pm_runtime_get_sync(&up->pdev->dev);
 
-	local_irq_save(flags);
-	if (up->port.sysrq)
-		locked = 0;
-	else if (oops_in_progress)
-		locked = spin_trylock(&up->port.lock);
+	if (up->port.sysrq || oops_in_progress)
+		locked = spin_trylock_irqsave(&up->port.lock, flags);
 	else
-		spin_lock(&up->port.lock);
+		spin_lock_irqsave(&up->port.lock, flags);
 
 	/*
 	 * First save the IER then disable the interrupts
@@ -1117,8 +1114,7 @@ serial_omap_console_write(struct console
 	pm_runtime_mark_last_busy(&up->pdev->dev);
 	pm_runtime_put_autosuspend(&up->pdev->dev);
 	if (locked)
-		spin_unlock(&up->port.lock);
-	local_irq_restore(flags);
+		spin_unlock_irqrestore(&up->port.lock, flags);
 }
 
 static int __init