[PATCH v2 11/16] PCI: Leave normal LIST_POISON in deleted list entries

Bjorn Helgaas bhelgaas at google.com
Fri Aug 17 19:36:41 EDT 2012


list_del() already sets next/prev to LIST_POISON1/LIST_POISON2, so we
don't need to do anything special here to prevent further list accesses.

Signed-off-by: Bjorn Helgaas <bhelgaas at google.com>
---
 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 c01baca..4f9ca91 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -32,11 +32,8 @@ static void pci_stop_dev(struct pci_dev *dev)
 
 static void pci_destroy_dev(struct pci_dev *dev)
 {
-	/* Remove the device from the device lists, and prevent any further
-	 * list accesses from this device */
 	down_write(&pci_bus_sem);
 	list_del(&dev->bus_list);
-	dev->bus_list.next = dev->bus_list.prev = NULL;
 	up_write(&pci_bus_sem);
 
 	pci_free_resources(dev);




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