Commit f3bdbe36 authored by John Youn's avatar John Youn Committed by Felipe Balbi
Browse files

usb: gadget: composite: Add function to get descriptors 



There are a couple places in the code that get the function descriptors
based on the speed. Move this lookup into a function call and add
support to handle the SuperSpeedPlus descriptors as well.

Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent a4afd012

drivers/usb/gadget/composite.c

+32 −21
Original line number Diff line number Diff line
@@ -53,6 +53,36 @@ static struct usb_gadget_strings **get_containers_gs( 
	return (struct usb_gadget_strings **)uc->stash;

}



/**

 * function_descriptors() - get function descriptors for speed

 * @f: the function

 * @speed: the speed

 *

 * Returns the descriptors or NULL if not set.

 */

static struct usb_descriptor_header **

function_descriptors(struct usb_function *f,

		     enum usb_device_speed speed)

{

	struct usb_descriptor_header **descriptors;



	switch (speed) {

	case USB_SPEED_SUPER_PLUS:

		descriptors = f->ssp_descriptors;

		break;

	case USB_SPEED_SUPER:

		descriptors = f->ss_descriptors;

		break;

	case USB_SPEED_HIGH:

		descriptors = f->hs_descriptors;

		break;

	default:

		descriptors = f->fs_descriptors;

	}



	return descriptors;

}



/**

 * next_ep_desc() - advance to the next EP descriptor

 * @t: currect pointer within descriptor array
@@ -419,17 +449,7 @@ static int config_buf(struct usb_configuration *config, 
	list_for_each_entry(f, &config->functions, list) {

		struct usb_descriptor_header **descriptors;



		switch (speed) {

		case USB_SPEED_SUPER:

			descriptors = f->ss_descriptors;

			break;

		case USB_SPEED_HIGH:

			descriptors = f->hs_descriptors;

			break;

		default:

			descriptors = f->fs_descriptors;

		}



		descriptors = function_descriptors(f, speed);

		if (!descriptors)

			continue;

		status = usb_descriptor_fillbuf(next, len,
@@ -740,16 +760,7 @@ static int set_config(struct usb_composite_dev *cdev, 
		 * function's setup callback instead of the current

		 * configuration's setup callback.

		 */

		switch (gadget->speed) {

		case USB_SPEED_SUPER:

			descriptors = f->ss_descriptors;

			break;

		case USB_SPEED_HIGH:

			descriptors = f->hs_descriptors;

			break;

		default:

			descriptors = f->fs_descriptors;

		}

		descriptors = function_descriptors(f, gadget->speed);



		for (; *descriptors; ++descriptors) {

			struct usb_endpoint_descriptor *ep;