[U-Boot] [PATCH v3 2/7] dfu:usb: DFU USB function (f_dfu) support for g_dnl composite gadget

[Mike Frysinger <vapier@gentoo.org>]

On Tuesday 31 July 2012 02:36:58 Lukasz Majewski wrote:
> --- /dev/null
> +++ b/drivers/usb/gadget/f_dfu.c
>
> +static struct usb_interface_descriptor dfu_intf_runtime = {

can this be made const ?

> +static struct usb_descriptor_header *dfu_runtime_descs[] = {
> +	(struct usb_descriptor_header *) &dfu_intf_runtime,

can you change the descs array to be const ?
static const struct usb_descriptor_header * const dfu_runtime_descs[] = {

then i think you can drop the cast there ...

> +static struct usb_qualifier_descriptor dev_qualifier = {
> +static struct usb_gadget_strings stringtab_dfu_generic = {
> +static struct usb_gadget_strings *dfu_generic_strings[] = {
> +static struct usb_gadget_strings stringtab_dfu = {
> +static struct usb_gadget_strings *dfu_strings[] = {

can these be made const ?

> +static void handle_getstate(struct usb_request *req)
> +{
> +	struct f_dfu *f_dfu = req->context;
> +
> +	((u8 *)req->buf)[0] = f_dfu->dfu_state & 0xff;

pretty sure you don't need that "& 0xff"

> +static int state_app_idle(struct f_dfu *f_dfu,
> +			  const struct usb_ctrlrequest *ctrl,
> +			  struct usb_gadget *gadget,
> +			  struct usb_request *req)
> +{
> +	int value = 0;

might be good to push this down into the 1 case statement 
(USB_REQ_DFU_GETSTATE) that uses it rather than init it up top

same goes for all the other funcs below that follow this style
-mike
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