[PATCH 3/5] Fix an access-after-free issue in function pci_stop_and_remove_bus()

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If pci_stop_and_remove_bus() is called to remove a pci root bus,
the host_bridge structure may have already been freed after returning
from pci_remove_bus(), so don't access the structure any more.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
---
 drivers/pci/remove.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 75b0092..25f368e 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -194,9 +194,6 @@ void pci_stop_and_remove_bus(struct pci_bus *bus)
 
 	pci_remove_bus(bus);
 
-	if (host_bridge)
-		host_bridge->bus = NULL;
-
 	if (pci_bridge)
 		pci_bridge->subordinate = NULL;
 }
-- 
1.7.5.4

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