layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 820-usb-0021-MLK-22099-usb-host-xhci-do-warm-reset-for-link-state.patch

diff --git a/target/linux/layerscape/patches-5.4/820-usb-0021-MLK-22099-usb-host-xhci-do-warm-reset-for-link-state.patch b/target/linux/layerscape/patches-5.4/820-usb-0021-MLK-22099-usb-host-xhci-do-warm-reset-for-link-state.patch
new file mode 100644 (file)
index 0000000..18c9401
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/820-usb-0021-MLK-22099-usb-host-xhci-do-warm-reset-for-link-state.patch
@@ -0,0 +1,28 @@
+From 6921c206918a2bd9882bbf77211d37a063233d95 Mon Sep 17 00:00:00 2001
+From: Li Jun <jun.li@nxp.com>
+Date: Thu, 8 Aug 2019 16:13:40 +0800
+Subject: [PATCH] MLK-22099 usb: host: xhci: do warm reset for link state
+ rxdect
+
+As some USB3 port will lose link state while system sleep, then
+the link state will be at rxdect after resume, we need a warm
+reset to bring it back, so add the rxdect condition for CAS
+missing.
+
+Signed-off-by: Li Jun <jun.li@nxp.com>
+---
+ drivers/usb/host/xhci-hub.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -1682,7 +1682,8 @@ static bool xhci_port_missing_cas_quirk(
+               return false;
+ 
+       if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) &&
+-          ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE))
++          ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE) &&
++          ((portsc & PORT_PLS_MASK) != XDEV_RXDETECT))
+               return false;
+ 
+       /* clear wakeup/change bits, and do a warm port reset */