From: Roger Quadros <rogerq@ti.com>
Date: Mon, 21 Sep 2015 14:46:13 +0000 (+0300)
Subject: usb: xhci: Clear XHCI_STATE_DYING on start
X-Git-Tag: firefly_0821_release~3679^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5eaec968f3377c20e7da49f8e3aef1d874a0591b;p=firefly-linux-kernel-4.4.55.git

usb: xhci: Clear XHCI_STATE_DYING on start

commit e5bfeab0ad515b4f6df39fe716603e9dc6d3dfd0 upstream.

For whatever reason if XHCI died in the previous instant
then it will never recover on the next xhci_start unless we
clear the DYING flag.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 1f901fc25590..1a22d186bef7 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -139,7 +139,8 @@ static int xhci_start(struct xhci_hcd *xhci)
 				"waited %u microseconds.\n",
 				XHCI_MAX_HALT_USEC);
 	if (!ret)
-		xhci->xhc_state &= ~XHCI_STATE_HALTED;
+		xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
+
 	return ret;
 }