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ehci-hcd: Disable memory-write-invalidate when the driver is removed
The driver calls pci_set_mwi to enable memory-write-invalidate when it is initialized, but does not call pci_clear_mwi when it is removed. Many other drivers calls pci_clear_mwi when pci_set_mwi is called, such as r8169, 8139cp and e1000. This patch adds a function "ehci_pci_remove" to remove the pci driver. This function calls pci_clear_mwi and usb_hcd_pci_remove, which can fix the problem. Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -377,6 +377,12 @@ static int ehci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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return usb_hcd_pci_probe(pdev, id);
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}
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static void ehci_pci_remove(struct pci_dev *pdev)
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{
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pci_clear_mwi(pdev);
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usb_hcd_pci_remove(pdev);
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}
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/* PCI driver selection metadata; PCI hotplugging uses this */
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static const struct pci_device_id pci_ids [] = { {
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/* handle any USB 2.0 EHCI controller */
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@ -396,7 +402,7 @@ static struct pci_driver ehci_pci_driver = {
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.id_table = pci_ids,
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.probe = ehci_pci_probe,
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.remove = usb_hcd_pci_remove,
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.remove = ehci_pci_remove,
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.shutdown = usb_hcd_pci_shutdown,
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#ifdef CONFIG_PM
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