USB: EHCI: remove unused Link Power Management code
This patch (as1622) removes the USB-2.1 Link Power Management code
from the ehci-hcd driver. This code was never integrated with
usbcore, it is full of bugs, and it was not getting used by anybody.
However, the debugging code for dumping the LPM-related fields in the
EHCI registers is left in place. In theory it might be useful to see
these values, even though we don't use them.
This essentially amounts to a partial revert of commit
aa4d8342988d0c1a79ff19b2ede1e81dfbb16ea5 (USB: EHCI: EHCI 1.1
addendum: preparation) and an almost full revert of commit
48f24970144479c29b8cee6d2e1dbedf6dcf9cfb (USB: EHCI: EHCI 1.1
addendum: Basic LPM feature support) plus its follow-ons.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 7880ba6..e17330a 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -202,11 +202,6 @@
break;
case PCI_VENDOR_ID_INTEL:
ehci->need_io_watchdog = 0;
- if (pdev->device == 0x0806 || pdev->device == 0x0811
- || pdev->device == 0x0829) {
- ehci_info(ehci, "disable lpm for langwell/penwell\n");
- ehci->has_lpm = 0;
- }
break;
case PCI_VENDOR_ID_NVIDIA:
switch (pdev->device) {
@@ -216,8 +211,7 @@
* devices with PPCD enabled.
*/
case 0x0d9d:
- ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89");
- ehci->has_lpm = 0;
+ ehci_info(ehci, "disable ppcd for nvidia mcp89\n");
ehci->has_ppcd = 0;
ehci->command &= ~CMD_PPCEE;
break;
@@ -425,11 +419,6 @@
.relinquish_port = ehci_relinquish_port,
.port_handed_over = ehci_port_handed_over,
- /*
- * call back when device connected and addressed
- */
- .update_device = ehci_update_device,
-
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};