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From 1e82360f4dd318a8ca4bd2e0d0b75a1780c158d7 Mon Sep 17 00:00:00 2001
From: Yasushi Asano <yasano@jp.adit-jv.com>
Date: Mon, 18 Feb 2019 11:26:34 +0100
Subject: [PATCH 2/6] usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
When plugging BUFFALO LUA4-U3-AGT USB3.0 to Gigabit Ethernet LAN
Adapter, warning messages filled up dmesg.
[ 101.098287] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk?
[ 101.117463] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk?
[ 101.136513] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk?
Adding the XHCI_TRUST_TX_LENGTH quirk resolves the issue.
Signed-off-by: Yasushi Asano <yasano@jp.adit-jv.com>
Signed-off-by: Spyridon Papageorgiou <spapageorgiou@de.adit-jv.com>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
---
drivers/usb/host/xhci-rcar.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index b05c937..1f31f84 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -264,6 +264,7 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd)
return -ETIMEDOUT;
xhci->quirks |= XHCI_SLOW_SUSPEND;
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
return xhci_rcar_download_firmware(hcd);
}
--
2.7.4
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