linux-kernel - [PATCH 09/12] pps: fix device destruction ordering

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Date:	Fri, 14 Dec 2012 15:02:59 +0400
From:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
To:	linux-kernel@...r.kernel.org
Cc:	Rodolfo Giometti <giometti@...eenne.com>
Subject: [PATCH 09/12] pps: fix device destruction ordering

device_destroy() calls final kfree(), thus cdev_del() must be called before it.
Catched as overwritten poison in kmalloc-512.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc: Rodolfo Giometti <giometti@...eenne.com>
---
 drivers/pps/pps.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c
index 2420d5a..769bb84 100644
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -352,8 +352,8 @@ free_idr:
 
 void pps_unregister_cdev(struct pps_device *pps)
 {
-	device_destroy(pps_class, pps->dev->devt);
 	cdev_del(&pps->cdev);
+	device_destroy(pps_class, pps->dev->devt);
 }
 
 /*

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