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| author | Alan Stern <stern@rowland.harvard.edu> | 2012-10-31 21:12:11 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-31 23:48:07 +0400 |
| commit | 4968f951913997adc8c68c4e986e8168ee1d2998 (patch) | |
| tree | 4ab4aa7bff6faf8c533ec5c346d591fdb0ed64b5 /drivers/usb/host/ehci-hub.c | |
| parent | 571e41214e988bc38c99d804e6d8e1ea1d016342 (diff) | |
| download | linux-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-hub.c')
| -rw-r--r-- | drivers/usb/host/ehci-hub.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index a7ec827ca2ca..a2c56cdd2c3a 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -777,11 +777,6 @@ static int ehci_hub_control ( status_reg); break; case USB_PORT_FEAT_C_CONNECTION: - if (ehci->has_lpm) { - /* clear PORTSC bits on disconnect */ - temp &= ~PORT_LPM; - temp &= ~PORT_DEV_ADDR; - } ehci_writel(ehci, temp | PORT_CSC, status_reg); break; case USB_PORT_FEAT_C_OVER_CURRENT: |