xHC hosts from several vendors have the same issue where endpoints start so slowly that a later queued 'Stop Endpoint' command may complete before endpoint is up and running.

The 'Stop Endpoint' command fails with context state error as the endpoint still appears as stopped.

See commit 42b758137601 ("usb: xhci: Limit Stop Endpoint retries") for details

CC: stable@vger.kernel.org Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com --- drivers/usb/host/xhci-ring.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 4cf5363875c7..09b05a62375e 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1199,8 +1199,6 @@ static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, * Keep retrying until the EP starts and stops again, on * chips where this is known to help. Wait for 100ms. */ - if (!(xhci->quirks & XHCI_NEC_HOST)) - break; if (time_is_before_jiffies(ep->stop_time + msecs_to_jiffies(100))) break; fallthrough;