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| author | Alan Stern <stern@rowland.harvard.edu> | 2016-10-21 16:49:07 -0400 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-11-11 16:32:35 -0600 |
| commit | ccdb6be9ec6580ef69f68949ebe26e0fb58a6fb0 (patch) | |
| tree | 2ffbfdb03906dd4a26e37fbd1063fdc7179ff97d /drivers/usb | |
| parent | 6496ebd7edf446fccf8266a1a70ffcb64252593e (diff) | |
| download | linux-stable-ccdb6be9ec6580ef69f68949ebe26e0fb58a6fb0.tar.gz linux-stable-ccdb6be9ec6580ef69f68949ebe26e0fb58a6fb0.tar.bz2 linux-stable-ccdb6be9ec6580ef69f68949ebe26e0fb58a6fb0.zip | |
USB: UHCI: report non-PME wakeup signalling for Intel hardware
The UHCI controllers in Intel chipsets rely on a platform-specific non-PME
mechanism for wakeup signalling. They can generate wakeup signals even
though they don't support PME.
We need to let the USB core know this so that it will enable runtime
suspend for UHCI controllers.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: stable@vger.kernel.org
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/uhci-pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c index 940304c33224..02260cfdedb1 100644 --- a/drivers/usb/host/uhci-pci.c +++ b/drivers/usb/host/uhci-pci.c @@ -129,6 +129,10 @@ static int uhci_pci_init(struct usb_hcd *hcd) if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP) uhci->wait_for_hp = 1; + /* Intel controllers use non-PME wakeup signalling */ + if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL) + device_set_run_wake(uhci_dev(uhci), 1); + /* Set up pointers to PCI-specific functions */ uhci->reset_hc = uhci_pci_reset_hc; uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc; |