From 8280260e37a879f06a2927724daeb48577612c17 Mon Sep 17 00:00:00 2001
From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: Thu, 25 Apr 2019 13:55:23 -0700
Subject: [PATCH] UPSTREAM: usb: dwc3: Fix default lpm_nyet_threshold value

The max possible value for DCTL.LPM_NYET_THRES is 15 and not 255. Change
the default value to 15.

Change-Id: Ib59799b4df8de9de1ea53362b55c7b822b02cbba
Cc: stable@vger.kernel.org
Fixes: 80caf7d21adc ("usb: dwc3: add lpm erratum support")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
(cherry picked from commit 8d791929b2fbdf7734c1596d808e55cb457f4562)
---
 drivers/usb/dwc3/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 84d0b7a582c1..2f401d577eb7 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1215,7 +1215,7 @@ static void dwc3_get_properties(struct dwc3 *dwc)
 	u8			tx_max_burst_prd;
 
 	/* default to highest possible threshold */
-	lpm_nyet_threshold = 0xff;
+	lpm_nyet_threshold = 0xf;
 
 	/* default to -3.5dB de-emphasis */
 	tx_de_emphasis = 1;