From: David Brownell Date: Tue, 13 Sep 2005 02:39:39 +0000 (-0700) Subject: [PATCH] usb device wakeup flags X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b94dc6b58667a73eeaf5cfd9c9e90dcd98743c5b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] usb device wakeup flags This patch teaches "usb_device" about the new driver model wakeup support: - It updates device wakeup capabilities when entering a configuration with the WAKEUP attribute; - During suspend processing it consults the policy bit to see whether it should enable wakeup for that device. (This resolves a FIXME to not assume the answer is always "yes"; some devices lie about supporting remote wakeup.) Support for root hubs and the HCDs is separate (and more complex). Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index a12cab5314e9..c3e2024c4347 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1020,9 +1020,15 @@ void usb_set_device_state(struct usb_device *udev, spin_lock_irqsave(&device_state_lock, flags); if (udev->state == USB_STATE_NOTATTACHED) ; /* do nothing */ - else if (new_state != USB_STATE_NOTATTACHED) + else if (new_state != USB_STATE_NOTATTACHED) { udev->state = new_state; - else + if (new_state == USB_STATE_CONFIGURED) + device_init_wakeup(&udev->dev, + (udev->actconfig->desc.bmAttributes + & USB_CONFIG_ATT_WAKEUP)); + else if (new_state != USB_STATE_SUSPENDED) + device_init_wakeup(&udev->dev, 0); + } else recursively_mark_NOTATTACHED(udev); spin_unlock_irqrestore(&device_state_lock, flags); } @@ -1546,11 +1552,7 @@ static int hub_port_suspend(struct usb_hub *hub, int port1, * NOTE: OTG devices may issue remote wakeup (or SRP) even when * we don't explicitly enable it here. */ - if (udev->actconfig - // && FIXME (remote wakeup enabled on this bus) - // ... currently assuming it's always appropriate - && (udev->actconfig->desc.bmAttributes - & USB_CONFIG_ATT_WAKEUP) != 0) { + if (device_may_wakeup(&udev->dev)) { status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_REMOTE_WAKEUP, 0,