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From:   Chunfeng Yun <chunfeng.yun@mediatek.com>
To:     Mathias Nyman <mathias.nyman@intel.com>
CC:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Felipe Balbi <felipe.balbi@linux.intel.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Chunfeng Yun <chunfeng.yun@mediatek.com>,
        <linux-usb@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>
Subject: [PATCH 1/6] usb: xhci-mtk: resume USB3 roothub first
Date:   Wed, 29 Aug 2018 10:55:13 +0800
Message-ID: <3bcc220aa54bfebc39cea54cd736388ad37ee0c5.1535510898.git.chunfeng.yun@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/usb/host/xhci-mtk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 7334da9..71d0d33 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -642,10 +642,10 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev)
 	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;
 }
 
-- 
1.9.1