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| author | Alan Stern <stern@rowland.harvard.edu> | 2008-04-14 12:17:10 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-04-24 21:16:53 -0700 |
| commit | 58a97ffeb2297f154659f339d77eb3f32c4d8b3e (patch) | |
| tree | 2ca171b7f720769007f9c9624b74ca4ad3442f02 /drivers/usb/core/driver.c | |
| parent | b950bdbc67041412cb042e404938667204c7902c (diff) | |
| download | talos-obmc-linux-58a97ffeb2297f154659f339d77eb3f32c4d8b3e.tar.gz talos-obmc-linux-58a97ffeb2297f154659f339d77eb3f32c4d8b3e.zip | |
USB: HCDs use the do_remote_wakeup flag
When a USB device is suspended, whether or not it is enabled for
remote wakeup depends on the device_may_wakeup() setting. The setting
is then saved in the do_remote_wakeup flag.
Later on, however, the device_may_wakeup() value can change because of
user activity. So when testing whether a suspended device is or
should be enabled for remote wakeup, we should always test
do_remote_wakeup instead of device_may_wakeup(). This patch (as1076)
makes that change for root hubs in several places.
The patch also adjusts uhci-hcd so that when an autostopped controller
is suspended, the remote wakeup setting agrees with the value recorded
in the root hub's do_remote_wakeup flag.
And the patch adjusts ehci-hcd so that wakeup events on selectively
suspended ports (i.e., the bus itself isn't suspended) don't turn on
the PME# wakeup signal.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 2ea333a43d65..edc31e13e95e 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -932,7 +932,6 @@ static int autosuspend_check(struct usb_device *udev, int reschedule) * is disabled. Also fail if any interfaces require remote wakeup * but it isn't available. */ - udev->do_remote_wakeup = device_may_wakeup(&udev->dev); if (udev->pm_usage_cnt > 0) return -EBUSY; if (udev->autosuspend_delay < 0 || udev->autosuspend_disabled) |
