linux-kernel - [PATCH 32/46] debug: use dev_WARN() rather than WARN_ON() in device_pm

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Date:	Thu, 16 Oct 2008 10:10:33 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 32/46] debug: use dev_WARN() rather than WARN_ON() in device_pm_add()

From: Arjan van de Ven <arjan@...ux.intel.com>

device_pm_add() has a WARN_ON that is showing relatively high on
kerneloops.org, but unfortunately the WARN_ON is less than useful
in that it doesn't print any information about what device is causing
the issue.

This patch fixes this by turning the WARN_ON() into the newly
introduces dev_WARN() which will print information about the
device in question.

Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/power/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 273a944..b0eb6af 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -83,7 +83,7 @@ void device_pm_add(struct device *dev)
 		 * transition is in progress in order to avoid leaving them
 		 * unhandled down the road
 		 */
-		WARN_ON(true);
+		dev_WARN(dev, "Parentless device registered during a PM transaction\n");
 	}
 
 	list_add_tail(&dev->power.entry, &dpm_list);
-- 
1.6.0.2

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