Taken from linux kernel with commit commit 765f5b830e547229bb752e7b232ee83e2b3d49d5 Author: Sebastian Andrzej Siewior bigeasy@linutronix.de Date: Thu Jun 23 14:26:11 2011 +0200
usb: gadget: defer setting maxpacket till ->setup()
Signed-off-by: Kishon Vijay Abraham I kishon@ti.com --- drivers/usb/gadget/composite.c | 4 +++- drivers/usb/gadget/ether.c | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index a4c5606..5cedc9e 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -283,7 +283,7 @@ static void device_qual(struct usb_composite_dev *cdev) qual->bDeviceSubClass = cdev->desc.bDeviceSubClass; qual->bDeviceProtocol = cdev->desc.bDeviceProtocol; /* ASSUME same EP0 fifo size at both speeds */ - qual->bMaxPacketSize0 = cdev->desc.bMaxPacketSize0; + qual->bMaxPacketSize0 = cdev->gadget->ep0->maxpacket; qual->bNumConfigurations = count_configs(cdev, USB_DT_DEVICE_QUALIFIER); qual->bRESERVED = 0; } @@ -736,6 +736,8 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_DT_DEVICE: cdev->desc.bNumConfigurations = count_configs(cdev, USB_DT_DEVICE); + cdev->desc.bMaxPacketSize0 = + cdev->gadget->ep0->maxpacket; value = min(w_length, (u16) sizeof cdev->desc); memcpy(req->buf, &cdev->desc, value); break; diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index ba442d5..8ccf9b0 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -1249,6 +1249,7 @@ eth_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) switch (wValue >> 8) {
case USB_DT_DEVICE: + device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; value = min(wLength, (u16) sizeof device_desc); memcpy(req->buf, &device_desc, value); break; @@ -2133,7 +2134,6 @@ autoconf_fail: hs_subset_descriptors(); }
- device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; usb_gadget_set_selfpowered(gadget);
/* For now RNDIS is always a second config */