[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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
commit f69079c91f8ade0bb306d137d60cc9892e89f35a
tree 40b0e76157521b9c422267c7c6d693be16e93e77
parent 79eef3cfd105168a2115fff06971af8efa27db82
author David Brownell <[email protected]> Mon, 12 Sep 2005 19:39:39 -0700
committer Greg Kroah-Hartman <[email protected]> Thu, 27 Oct 2005 22:47:59 -0700
drivers/usb/core/hub.c | 16 +++++++++-------
1 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a12cab5..c3e2024 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1020,9 +1020,15 @@ void usb_set_device_state(struct usb_dev
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_h
* 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,
-
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