linux-kernel - [PATCH 4.4 151/266] usb: dwc3: Fix default lpm_nyet

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Message-Id: <20190515090728.020915732@linuxfoundation.org>
Date:   Wed, 15 May 2019 12:54:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thinh Nguyen <thinhn@...opsys.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: [PATCH 4.4 151/266] usb: dwc3: Fix default lpm_nyet_threshold value

From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>

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@...r.kernel.org
Fixes: 80caf7d21adc ("usb: dwc3: add lpm erratum support")
Signed-off-by: Thinh Nguyen <thinhn@...opsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/dwc3/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -867,7 +867,7 @@ static int dwc3_probe(struct platform_de
 	dwc->regs_size	= resource_size(res);
 
 	/* default to highest possible threshold */
-	lpm_nyet_threshold = 0xff;
+	lpm_nyet_threshold = 0xf;
 
 	/* default to -3.5dB de-emphasis */
 	tx_de_emphasis = 1;