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xhci: Silence "xHCI xhci_drop_endpoint called with disabled ep ..." messages 

When re-applying the configuration after a successful usb device reset,
xhci_discover_or_reset_device has already dropped the endpoints, and free-ed
the rings.

The endpoints already being dropped is expected, and should not lead to
warnings. Use the fact that the rings are also free-ed in this scenario to
detect this, and suppress the "xHCI xhci_drop_endpoint called with disabled
ep ..." message in this case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

--
Changes in v2:
Move the ring check to only guard the xhci_warn, so as to avoid side-effects
in case we have a scenario where the rings are free-ed, but the endpoint is
not yet dropped.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2015-01-16 17:54:02 +02:00 committed by Greg Kroah-Hartman
parent 99705092a8
commit a6134136d9
1 changed files with 4 additions and 2 deletions
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6
drivers/usb/host/xhci.c
View File

@ -1673,8 +1673,10 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
cpu_to_le32(EP_STATE_DISABLED)) ||
le32_to_cpu(ctrl_ctx->drop_flags) &
xhci_get_endpoint_flag(&ep->desc)) {
xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
__func__, ep);
/* Do not warn when called after a usb_device_reset */
if (xhci->devs[udev->slot_id]->eps[ep_index].ring != NULL)
xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
__func__, ep);
return 0;
}