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PCI: Leave normal LIST_POISON in deleted list entries 

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.

Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
This commit is contained in:
Bjorn Helgaas 2012-08-16 21:12:38 -06:00
parent d563e2ccc8
commit a7479d7446
1 changed files with 0 additions and 3 deletions
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3
drivers/pci/remove.c
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@ -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);