[PATCH 4.9 20/28] usb: dwc3: Fix default lpm_nyet_threshold value

From: Greg Kroah-Hartman
Date: Thu May 09 2019 - 14:45:41 EST


From: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx
Fixes: 80caf7d21adc ("usb: dwc3: add lpm erratum support")
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
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
@@ -991,7 +991,7 @@ 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;