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Subject[PATCH 4.9 12/35] usb: xhci-mtk: resume USB3 roothub first
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

commit 555df5820e733cded7eb8d0bf78b2a791be51d75 upstream.

Give USB3 devices a better chance to enumerate at USB3 speeds if
they are connected to a suspended host.
Porting from "671ffdff5b13 xhci: resume USB 3 roothub first"

Cc: <stable@vger.kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/host/xhci-mtk.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -735,10 +735,10 @@ static int __maybe_unused xhci_mtk_resum
xhci_mtk_host_enable(mtk);

xhci_dbg(xhci, "%s: restart port polling\n", __func__);
- set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
- usb_hcd_poll_rh_status(hcd);
set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags);
usb_hcd_poll_rh_status(xhci->shared_hcd);
+ set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
+ usb_hcd_poll_rh_status(hcd);
return 0;
}


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