diff options
| -rw-r--r-- | include/linux/usb/ch9.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 1122a6c2c1a3..6169438ec5a2 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -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 { |