If the PORTWAK register is implemented and at least one of the physical
ports is enabled for wakeup, enable wakeup for the ehci-pci device.
Signed-off-by: Sameer Nanda <snanda@xxxxxxxxxxxx>
---
drivers/usb/host/ehci-pci.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 1102ce6..ce6f784 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -285,6 +285,16 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
dev_warn(&pdev->dev, "Enabling legacy PCI PM\n");
device_set_wakeup_capable(&pdev->dev, 1);
}
+ } else {
+ u16 port_wake;
+
+ pci_read_config_word(pdev, 0x62, &port_wake);
+
+ /* If PORTWAK register is implemented and at least one USB
+ * port is enabled for wakeup, enable wakeup.
+ */
+ if (port_wake & 0x0001 && port_wake & 0xfffe)
+ device_set_wakeup_enable(&pdev->dev, 1);
}
#ifdef CONFIG_USB_SUSPEND
--
1.7.3.1
--
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