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authorAlan Stern <stern@rowland.harvard.edu>2007-09-10 11:31:43 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:55:26 -0700
commit5ad4f71e2f19a06f738463da1f09ea7fda3a3db2 (patch)
tree02c6b1413fdcb01e7086ae2dfb2b84796ce9b775 /drivers
parent7477120e34eef65a530cfb3fea5fe612c89669e5 (diff)
USB: move decision to ignore FREEZE events
This patch (as987) changes the way FREEZE and PRETHAW suspend events are handled in usbcore. The decision about whether or not to ignore them for non-root devices is pushed down into the USB-device driver, instead of being made in the core code. This is appropriate, since devices exported to a virtualized guest or over a network may indeed need to handle these types of suspend, even though normal devices don't. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/core/driver.c9
-rw-r--r--drivers/usb/core/generic.c5
2 files changed, 6 insertions, 8 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 8da4801bb92..ca43a6f824a 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1088,15 +1088,8 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
break;
}
}
- if (status == 0) {
-
- /* Non-root devices don't need to do anything for FREEZE
- * or PRETHAW. */
- if (udev->parent && (msg.event == PM_EVENT_FREEZE ||
- msg.event == PM_EVENT_PRETHAW))
- goto done;
+ if (status == 0)
status = usb_suspend_device(udev, msg);
- }
/* If the suspend failed, resume interfaces that did get suspended */
if (status != 0) {
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index 9148b69785c..c1cb94e9f24 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -206,8 +206,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg)
*/
if (!udev->parent)
rc = hcd_bus_suspend(udev);
+
+ /* Non-root devices don't need to do anything for FREEZE or PRETHAW */
+ else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
+ rc = 0;
else
rc = usb_port_suspend(udev);
+
return rc;
}