ehci-hcd: Disable memory-write-invalidate when the driver is removed
authorJia-Ju Bai <baijiaju1990@163.com>
Mon, 4 Jan 2016 08:14:29 +0000 (16:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 25 Jan 2016 04:51:34 +0000 (20:51 -0800)
commite3e2e36c106a1e4212c65ba5b5d2bcb3455cb354
tree1d83057e3a7220ed224503dc24cecd93cd9aff94
parentd8ff463a4ef22f090df21a3c5b34b336e80b72ca
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>
drivers/usb/host/ehci-pci.c