diff options
| author | David Brownell <david-b@pacbell.net> | 2007-04-17 17:51:38 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 13:28:39 -0700 |
| commit | aa2ce5ca6be480cb139e21258671c2c27826f8ff (patch) | |
| tree | c6e0cf5fc2693de690fbb970ed8a9b0e9637bf35 /include | |
| parent | 8c9862e512f59ae3f41f83c109be12f93e37bb2d (diff) | |
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: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
| -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 1122a6c2c1a..6169438ec5a 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 { |