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authorAlan Stern <stern@rowland.harvard.edu>2007-09-10 11:34:26 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:55:26 -0700
commit6840d2555afd66290be7a39b400b5e66a840b82d (patch)
treecfc969126e5915db6536382cddbfdd9a63f5b3c8 /drivers/usb/core/hcd.c
parent95cf82f99cfbd697c15572c444bd4f54f19745b0 (diff)
USB: flush outstanding URBs when suspending
This patch (as989) makes usbcore flush all outstanding URBs for each device as the device is suspended. This will be true even when CONFIG_USB_SUSPEND is not enabled. In addition, an extra can_submit flag is added to the usb_device structure. That flag will be turned off whenever a suspend request has been received for the device, even if the device isn't actually suspended because CONFIG_USB_SUSPEND isn't set. It's no longer necessary to check for the device state being equal to USB_STATE_SUSPENDED during URB submission; that check can be replaced by a check of the can_submit flag. This also permits us to remove some questionable references to the deprecated power.power_state field. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index e5874e8b8cb..2c79aa6ca2b 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1014,6 +1014,11 @@ int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb)
goto done;
}
+ if (unlikely(!urb->dev->can_submit)) {
+ rc = -EHOSTUNREACH;
+ goto done;
+ }
+
/*
* Check the host controller's state and add the URB to the
* endpoint's queue.