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Commit aa2ce5ca authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
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USB: <linux/usb/ch9.h> minor doc update 



Minor doc update to <linux/usb/ch9.h> ... say where USB_DT_CS_* came
from and update the definitions to match how they're derived there.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8c9862e5

include/linux/usb/ch9.h

+9 −6
Original line number Diff line number Diff line
@@ -181,12 +181,15 @@ struct usb_ctrlrequest { 
#define USB_DT_WIRE_ADAPTER		0x21

#define USB_DT_RPIPE			0x22



/* conventional codes for class-specific descriptors */

#define USB_DT_CS_DEVICE		0x21

#define USB_DT_CS_CONFIG		0x22

#define USB_DT_CS_STRING		0x23

#define USB_DT_CS_INTERFACE		0x24

#define USB_DT_CS_ENDPOINT		0x25

/* Conventional codes for class-specific descriptors.  The convention is

 * defined in the USB "Common Class" Spec (3.11).  Individual class specs

 * are authoritative for their usage, not the "common class" writeup.

 */

#define USB_DT_CS_DEVICE		(USB_TYPE_CLASS | USB_DT_DEVICE)

#define USB_DT_CS_CONFIG		(USB_TYPE_CLASS | USB_DT_CONFIG)

#define USB_DT_CS_STRING		(USB_TYPE_CLASS | USB_DT_STRING)

#define USB_DT_CS_INTERFACE		(USB_TYPE_CLASS | USB_DT_INTERFACE)

#define USB_DT_CS_ENDPOINT		(USB_TYPE_CLASS | USB_DT_ENDPOINT)



/* All standard descriptors have these 2 fields at the beginning */

struct usb_descriptor_header {