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- wheezy 3.2.78-1
STRUCT USB_CTRLREQUE(9) | USB-Standard Types | STRUCT USB_CTRLREQUE(9) |
NAME¶
struct_usb_ctrlrequest - SETUP data for a USB device control requestSYNOPSIS¶
struct usb_ctrlrequest { __u8 bRequestType; __u8 bRequest; __le16 wValue; __le16 wIndex; __le16 wLength; };
MEMBERS¶
bRequestTypematches the USB bmRequestType field
bRequest
matches the USB bRequest field
wValue
matches the USB wValue field (le16 byte
order)
wIndex
matches the USB wIndex field (le16 byte
order)
wLength
matches the USB wLength field (le16 byte
order)
DESCRIPTION¶
This structure is used to send control requests to a USB device. It matches the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the USB spec for a fuller description of the different fields, and what they are used for. Note that the driver for any interface can issue control requests. For most devices, interfaces don't coordinate with each other, so such requests may be made at any time.COPYRIGHT¶
March 2016 | Kernel Hackers Manual 3.2. |