>EXTERNAL MAIL
>
>
>
>Hi,
>
>Pawel Laszczak <paw...@cadence.com> writes:
>> diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
>> index da82606be605..d388a3a5ab7e 100644
>> --- a/include/linux/usb/ch9.h
>> +++ b/include/linux/usb/ch9.h
>> @@ -70,4 +70,29 @@ extern enum usb_device_speed usb_get_maximum_speed(struct
>> device *dev);
>> */
>> extern const char *usb_state_string(enum usb_device_state state);
>>
>> +/**
>> + * usb_decode_ctrl - Returns human readable representation of control
>> request.
>> + * @str: buffer to return a human-readable representation of control
>> request.
>> + * This buffer should have about 200 bytes.
>> + * @size: size of str buffer.
>> + * @bRequestType: matches the USB bmRequestType field
>> + * @bRequest: matches the USB bRequest field
>> + * @wValue: matches the USB wValue field (CPU byte order)
>> + * @wIndex: matches the USB wIndex field (CPU byte order)
>> + * @wLength: matches the USB wLength field (CPU byte order)
>> + *
>> + * Function returns decoded, formatted and human-readable description of
>> + * control request packet.
>> + *
>> + * The usage scenario for this is for tracepoints, so function as a return
>> + * use the same value as in parameters. This approach allows to use this
>> + * function in TP_printk
>> + *
>> + * Important: wValue, wIndex, wLength parameters before invoking this
>> function
>> + * should be processed by le16_to_cpu macro.
>> + */
>> +extern const char *usb_decode_ctrl(char *str, size_t size, __u8
>> bRequestType,
>> + __u8 bRequest, __u16 wValue, __u16 wIndex,
>> + __u16 wLength);
>> +
>
>where's the stub when !TRACING?
Right, I will add
#ifdef CONFIG_TRACING
.....
#endif
>
>--
>balbi
