[PATCH 3.16.y-ckt 038/104] usb: xhci: Clear XHCI_STATE_DYING on start

From: Luis Henriques
Date: Mon Oct 26 2015 - 10:21:10 EST

3.16.7-ckt19 -stable review patch. If anyone has any objections, please let me know.


From: Roger Quadros <rogerq@xxxxxx>

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@xxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
drivers/usb/host/xhci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 7ce24229e863..4170d913ee6e 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -147,7 +147,8 @@ static int xhci_start(struct xhci_hcd *xhci)
"waited %u microseconds.\n",
if (!ret)
- xhci->xhc_state &= ~XHCI_STATE_HALTED;
+ xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
return ret;

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