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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2011-06-23 14:26:11 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2011-07-01 14:31:12 -0700
commit765f5b830e547229bb752e7b232ee83e2b3d49d5 (patch)
treeffa37920a165fd3a964b7e0f333f6509d3e59de3 /drivers/usb/gadget/dbgp.c
parent193ab2a6070039e7ee2b9b9bebea754a7c52fd1b (diff)
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 <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/dbgp.c')
-rw-r--r--drivers/usb/gadget/dbgp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c
index 052209e89271..8beefdd36787 100644
--- a/drivers/usb/gadget/dbgp.c
+++ b/drivers/usb/gadget/dbgp.c
@@ -314,7 +314,6 @@ static int __init dbgp_bind(struct usb_gadget *gadget)
dbgp.req->length = DBGP_REQ_EP0_LEN;
gadget->ep0->driver_data = gadget;
- device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
#ifdef CONFIG_USB_G_DBGP_SERIAL
dbgp.serial = kzalloc(sizeof(struct gserial), GFP_KERNEL);
@@ -365,6 +364,7 @@ static int dbgp_setup(struct usb_gadget *gadget,
dev_dbg(&dbgp.gadget->dev, "setup: desc device\n");
len = sizeof device_desc;
data = &device_desc;
+ device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
break;
case USB_DT_DEBUG:
dev_dbg(&dbgp.gadget->dev, "setup: desc debug\n");