target/linux/layerscape/patches-5.4/820-usb-0021-MLK-22099-usb-host-xhci-do-warm-reset-for-link-state.patch

   1 From 6921c206918a2bd9882bbf77211d37a063233d95 Mon Sep 17 00:00:00 2001
   2 From: Li Jun <jun.li@nxp.com>
   3 Date: Thu, 8 Aug 2019 16:13:40 +0800
   4 Subject: [PATCH] MLK-22099 usb: host: xhci: do warm reset for link state
   5  rxdect
   6
   7 As some USB3 port will lose link state while system sleep, then
   8 the link state will be at rxdect after resume, we need a warm
   9 reset to bring it back, so add the rxdect condition for CAS
  10 missing.
  11
  12 Signed-off-by: Li Jun <jun.li@nxp.com>
  13 ---
  14  drivers/usb/host/xhci-hub.c | 3 ++-
  15  1 file changed, 2 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/usb/host/xhci-hub.c
  18 +++ b/drivers/usb/host/xhci-hub.c
  19 @@ -1732,7 +1732,8 @@ static bool xhci_port_missing_cas_quirk(
  20                 return false;
  21
  22         if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) &&
  23 -           ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE))
  24 +           ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE) &&
  25 +           ((portsc & PORT_PLS_MASK) != XDEV_RXDETECT))
  26                 return false;
  27
  28         /* clear wakeup/change bits, and do a warm port reset */