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| author |   Mathias Nyman <mathias.nyman@linux.intel.com> | 2018-03-16 16:33:04 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-16 15:40:19 +0100 |
| commit | f5249461b504d35aa1a40140983b7ec415807d9e (patch) | |
| tree | 720ce5f41282147fa5dea5f2a039451918ea8f52 /drivers/usb/host/xhci-ring.c | |
| parent | xhci: refactor xhci_urb_enqueue a bit with minor changes (diff) | |
| download | wireguard-linux-f5249461b504d35aa1a40140983b7ec415807d9e.tar.xz wireguard-linux-f5249461b504d35aa1a40140983b7ec415807d9e.zip | |
xhci: Clear the host side toggle manually when endpoint is soft reset
Some devices use a clear endpoint halt request as a soft reset, even if
the endpoint is not halted. This will clear the toggle and sequence on the
device side.
xHCI however refuses to reset a non-halted endpoint, so instead
we need to issue a configure endpoint command on xHCI to clear its host
side toggle and sequence, and get it in sync with the device side.
This is a respin of a old patch that was reverted as it had a stale
endpoint context dequeue value which caused regression.
commit 27082e2654dc ("xhci: Clear the host side toggle manually when
endpoint is 'soft reset'")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 86476c6a8abc..91a1a824673d 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1829,9 +1829,10 @@ static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); - if (reset_type == EP_HARD_RESET) + if (reset_type == EP_HARD_RESET) { + ep->ep_state |= EP_HARD_CLEAR_TOGGLE; xhci_cleanup_stalled_ring(xhci, ep_index, stream_id, td); - + } xhci_ring_cmd_db(xhci); } |