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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-02-01 16:08:41 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-02-16 15:32:18 -0800 |
| commit | 12f1ff8351e235661beb0314d9ae9417a4871688 (patch) | |
| tree | a271549c8f9532fca46672b5b38c5dd95f2c41ea /drivers/usb/core | |
| parent | 7fe89e9cc8ebd9da70f760409a4301d26f80a460 (diff) | |
| download | talos-op-linux-12f1ff8351e235661beb0314d9ae9417a4871688.tar.gz talos-op-linux-12f1ff8351e235661beb0314d9ae9417a4871688.zip | |
usbcore: small changes to hub driver's suspend method
This patch (as847) makes some small changes to the hub driver's
suspend method:
For root hubs, the status URB should be unlinked and other
activity stopped _before_ the bus_suspend method is called.
The test for hdev->bus being NULL has been removed, since
it can never succeed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hub.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 590ec82d0515..7d6006573543 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1904,6 +1904,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) struct usb_hub *hub = usb_get_intfdata (intf); struct usb_device *hdev = hub->hdev; unsigned port1; + int status = 0; /* fail if children aren't already suspended */ for (port1 = 1; port1 <= hdev->maxchild; port1++) { @@ -1927,24 +1928,18 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) dev_dbg(&intf->dev, "%s\n", __FUNCTION__); + /* stop khubd and related activity */ + hub_quiesce(hub); + /* "global suspend" of the downstream HC-to-USB interface */ if (!hdev->parent) { - struct usb_bus *bus = hdev->bus; - if (bus) { - int status = hcd_bus_suspend (bus); - - if (status != 0) { - dev_dbg(&hdev->dev, "'global' suspend %d\n", - status); - return status; - } - } else - return -EOPNOTSUPP; + status = hcd_bus_suspend(hdev->bus); + if (status != 0) { + dev_dbg(&hdev->dev, "'global' suspend %d\n", status); + hub_activate(hub); + } } - - /* stop khubd and related activity */ - hub_quiesce(hub); - return 0; + return status; } static int hub_resume(struct usb_interface *intf) |
