From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: Thu, 25 Apr 2019 20:55:23 +0000 (-0700)
Subject: usb: dwc3: Fix default lpm_nyet_threshold value
X-Git-Tag: v5.1.1~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1ab43c370c590b19855b203e8b2dc1f53e6f7e6;p=thirdparty%2Fkernel%2Fstable.git

usb: dwc3: Fix default lpm_nyet_threshold value

commit 8d791929b2fbdf7734c1596d808e55cb457f4562 upstream.

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

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index a1b126f90261e..f944cea4056bc 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1218,7 +1218,7 @@ 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;