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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-06-23 16:26:11 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-07-02 01:31:12 +0400 |
| commit | 765f5b830e547229bb752e7b232ee83e2b3d49d5 (patch) | |
| tree | ffa37920a165fd3a964b7e0f333f6509d3e59de3 /drivers/usb/gadget/dbgp.c | |
| parent | 193ab2a6070039e7ee2b9b9bebea754a7c52fd1b (diff) | |
| download | linux-765f5b830e547229bb752e7b232ee83e2b3d49d5.tar.xz | |
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.c | 2 |
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"); |