linux-kernel - [PATCH 5/5] Staging: ipack/bridges/tpci200: fix kernel oops when uninstalling a device

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Date:	Fri, 25 May 2012 10:03:05 +0200
From:	Samuel Iglesias Gonsalvez <siglesias@...lia.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Samuel Iglesias Gonsalvez <siglesias@...lia.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] Staging: ipack/bridges/tpci200: fix kernel oops when uninstalling a device

When uninstalling a device, the call to the ipack_bus_ops remove() frees
resources in the ipack device driver but without unregistering the device.

It generates a kernel oops when somebody wants to unregister the device.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@...lia.com>
---
 drivers/staging/ipack/bridges/tpci200.c |   13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/staging/ipack/bridges/tpci200.c b/drivers/staging/ipack/bridges/tpci200.c
index e04cb8a..46127bc 100644
--- a/drivers/staging/ipack/bridges/tpci200.c
+++ b/drivers/staging/ipack/bridges/tpci200.c
@@ -751,23 +751,12 @@ out:
 	return res;
 }
 
-static void tpci200_slot_remove(struct tpci200_slot *slot)
-{
-	if ((slot->dev == NULL) ||
-	    (slot->dev->driver == NULL) ||
-	    (slot->dev->driver->ops == NULL) ||
-	    (slot->dev->driver->ops->remove == NULL))
-		return;
-
-	slot->dev->driver->ops->remove(slot->dev);
-}
-
 static void tpci200_uninstall(struct tpci200_board *tpci200)
 {
 	int i;
 
 	for (i = 0; i < TPCI200_NB_SLOT; i++)
-		tpci200_slot_remove(&tpci200->slots[i]);
+		tpci200_slot_unregister(tpci200->slots[i].dev);
 
 	tpci200_unregister(tpci200);
 	kfree(tpci200->slots);
-- 
1.7.10

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