linux-kernel - [PATCH 3/5] PM: Add debug printouts to async suspend and resume code paths

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Message-Id: <200912132340.57200.rjw@sisk.pl>
Date:	Sun, 13 Dec 2009 23:40:57 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	pm list <linux-pm@...ts.linux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [PATCH 3/5] PM: Add debug printouts to async suspend and resume code paths

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

Add pm_dev_dbg() to asynchronous suspend and resume code paths to
make the debugging of async suspend/resume easier.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/base/power/main.c |    2 ++
 1 file changed, 2 insertions(+)

Index: linux-2.6/drivers/base/power/main.c
===================================================================
--- linux-2.6.orig/drivers/base/power/main.c
+++ linux-2.6/drivers/base/power/main.c
@@ -510,6 +510,7 @@ static void async_resume(void *data, asy
 	struct device *dev = (struct device *)data;
 	int error;
 
+	pm_dev_dbg(dev, pm_transition, "async ");
 	error = __device_resume(dev, pm_transition, true);
 	if (error)
 		pm_dev_err(dev, pm_transition, " async", error);
@@ -791,6 +792,7 @@ static void async_suspend(void *data, as
 	struct device *dev = (struct device *)data;
 	int error;
 
+	pm_dev_dbg(dev, pm_transition, "async ");
 	error = __device_suspend(dev, pm_transition, true);
 	if (error) {
 		pm_dev_err(dev, pm_transition, " async", error);

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