On Thu, 28 Jul 2011, N, Mugunthan V wrote:

Hi RT Folks

I am testing 3.0-rt3 on AM3517 - Arm Cortex A8. As the kernel from the
mainline is not booting I am using a patch to boot AM3517 kernel on top of
the mainline kernel. I am getting a warning as below.

The same issue when I reported for rt3, Thomas has suggested a patch 
that is already integrated in rt4, even then I am getting the same 
warning.

That's a different warning as the one which was addressed by the
patch.

Attaching the patch and the rt-config file.

Please do not send this stuff over and over.
 
Fix for the serial issue below.

Thanks,

	tglx

---
 drivers/tty/serial/omap-serial.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

Index: linux-2.6/drivers/tty/serial/omap-serial.c
===================================================================

--- linux-2.6.orig/drivers/tty/serial/omap-serial.c
+++ linux-2.6/drivers/tty/serial/omap-serial.c

@@ -947,13 +947,12 @@ serial_omap_console_write(struct console
 	unsigned int ier;
 	int locked = 1;
 
-	local_irq_save(flags);
 	if (up->port.sysrq)
 		locked = 0;
 	else if (oops_in_progress)
-		locked = spin_trylock(&up->port.lock);
+		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

@@ -980,8 +979,7 @@ serial_omap_console_write(struct console
 		check_modem_status(up);
 
 	if (locked)
-		spin_unlock(&up->port.lock);
-	local_irq_restore(flags);
+		spin_unlock_irqrestore(&up->port.lock, flags);
 }
 
 static int __init