From: Marek Vasut <marex@denx.de>
Date: Tue, 26 Apr 2016 01:02:35 +0000 (+0200)
Subject: usb: dwc2: Init desc_before_addr
X-Git-Tag: v2016.05~25
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=e96e064f51139c4af39f14499564ef76e40bbc29;p=oweals%2Fu-boot.git

usb: dwc2: Init desc_before_addr

Initialize desc_before_addr, otherwise the USB core won't send the
first 64B Get Device Descriptor request in common/usb.c function
usb_setup_descriptor() . There are some USB devices which expect
this sequence and otherwise can misbehave.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Tom Rini <trini@konsulko.com>
---

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index 0c4adafee2..30b51b3d7f 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -1201,6 +1201,9 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
 static int dwc2_usb_probe(struct udevice *dev)
 {
 	struct dwc2_priv *priv = dev_get_priv(dev);
+	struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
+
+	bus_priv->desc_before_addr = true;
 
 	return dwc2_init_common(priv);
 }