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 1e91b803ee4e72f41b452d09a83c2794a1c05a22..73dc5a6c6108856d4accc3d2f9ccdb4ab5a23da2 100644 (file)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -991,7 +991,7 @@ static int dwc3_probe(struct platform_device *pdev)
        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;