From 765f5b830e547229bb752e7b232ee83e2b3d49d5 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Thu, 23 Jun 2011 14:26:11 +0200 Subject: usb: gadget: defer setting maxpacket till ->setup() maxpacket is set by the udc driver for ep0 very early. This value is copied by the function gadget used later for the USB_DT_DEVICE and USB_DT_DEVICE_QUALIFIER query. This seems to work fine so far. For USB3 we need set a different value here. In SS speed it is 2^x with x=9 and in HS we set something <= 64. If the UDC starts in SS and continues in HS after the cable has been plugged it will report a too small value. There setting of this value is defered and taken automaticly from the ep0 pointer where the UDC driver can update it according to the speed it detected _after_ a cable has been plugged. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/gmidi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb/gadget/gmidi.c') diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c index 4f40f1467438..8b9220e128a7 100644 --- a/drivers/usb/gadget/gmidi.c +++ b/drivers/usb/gadget/gmidi.c @@ -695,6 +695,7 @@ static int gmidi_setup(struct usb_gadget *gadget, switch (w_value >> 8) { case USB_DT_DEVICE: + device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; value = min(w_length, (u16) sizeof(device_desc)); memcpy(req->buf, &device_desc, value); break; @@ -1249,8 +1250,6 @@ autoconf_fail: dev->req->complete = gmidi_setup_complete; - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - gadget->ep0->driver_data = dev; INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname); -- cgit v1.2.3