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authorAlan Stern <stern@rowland.harvard.edu>2012-10-31 21:12:11 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-31 23:48:07 +0400
commit4968f951913997adc8c68c4e986e8168ee1d2998 (patch)
tree4ab4aa7bff6faf8c533ec5c346d591fdb0ed64b5 /drivers/usb/host/ehci-pci.c
parent571e41214e988bc38c99d804e6d8e1ea1d016342 (diff)
downloadlinux-4968f951913997adc8c68c4e986e8168ee1d2998.tar.xz
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>
Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
-rw-r--r--drivers/usb/host/ehci-pci.c13
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 7880ba621f89..e17330ae0aee 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -202,11 +202,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
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 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
* 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 @@ static const struct hc_driver ehci_pci_hc_driver = {
.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,
};