dm: usb: Add a generic descriptor struct

This is useful for creating lists of descriptors, and is better than using void * for this purpose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Add a generic descriptor struct
This is useful for creating lists of descriptors, and is better than using void * for this purpose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
Simon Glass
1 parent 243d7f15e5
Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff
include/linux/usb/ch9.h
@@ -379,6 +379,11 @@
 #define USB_DT_ENDPOINT_SIZE		7
 #define USB_DT_ENDPOINT_AUDIO_SIZE	9	/* Audio extension */
  
+/* Used to access common fields */
+struct usb_generic_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+};
  
 /*
  * Endpoints
...	...	@@ -379,6 +379,11 @@
379	379	#define USB_DT_ENDPOINT_SIZE 7
380	380	#define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
381	381
	382	+/* Used to access common fields */
	383	+struct usb_generic_descriptor {
	384	+ __u8 bLength;
	385	+ __u8 bDescriptorType;
	386	+};
382	387
383	388	/*
384	389	* Endpoints