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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.h | |
| parent | xhci: refactor xhci_urb_enqueue a bit with minor changes (diff) | |
| download | linux-dev-f5249461b504d35aa1a40140983b7ec415807d9e.tar.xz linux-dev-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.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e4d7d3d06a75..9f236da1093d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -921,6 +921,8 @@ struct xhci_virt_ep { #define EP_HAS_STREAMS (1 << 4) /* Transitioning the endpoint to not using streams, don't enqueue URBs */ #define EP_GETTING_NO_STREAMS (1 << 5) +#define EP_HARD_CLEAR_TOGGLE (1 << 6) +#define EP_SOFT_CLEAR_TOGGLE (1 << 7) /* ---- Related to URB cancellation ---- */ struct list_head cancelled_td_list; /* Watchdog timer for stop endpoint command to cancel URBs */ |