linux-kernel - [PATCH 2/2 v2] sh-sci / PM: Use power.irq

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Message-Id: <201108212111.45012.rjw@sisk.pl>
Date:	Sun, 21 Aug 2011 21:11:44 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	linux-sh@...r.kernel.org
Cc:	Linux PM mailing list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Alan Stern <stern@...land.harvard.edu>
Subject: [PATCH 2/2 v2] sh-sci / PM: Use power.irq_safe

From: Rafael J. Wysocki <rjw@...k.pl>

Since sci_port_enable() and sci_port_disable() may be run with
interrupts off and they execute pm_runtime_get_sync() and
pm_runtime_put_sync(), respectively, the SCI device's
power.irq_safe flags has to be used to indicate that it is safe
to execute runtime PM callbacks for this device with interrupts off.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/tty/serial/sh-sci.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux/drivers/tty/serial/sh-sci.c
===================================================================
--- linux.orig/drivers/tty/serial/sh-sci.c
+++ linux/drivers/tty/serial/sh-sci.c
@@ -1913,6 +1913,7 @@ static int __devinit sci_init_single(str
 
 		port->dev = &dev->dev;
 
+		pm_runtime_irq_safe(&dev->dev);
 		pm_runtime_enable(&dev->dev);
 	}
 

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