Re: [PATCH 1/3] usb: cp210x: Corrected USB request type definitions

["Bjørn Mork" <bjorn@mork.no>]

Preston Fick <pffick@gmail.com> writes:

> diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
> index ec30f95..e67ccf3 100644
> --- a/drivers/usb/serial/cp210x.c
> +++ b/drivers/usb/serial/cp210x.c
> @@ -188,8 +188,10 @@ static struct usb_serial_driver * const serial_drivers[] = {
>  };
>  
>  /* Config request types */
> -#define REQTYPE_HOST_TO_DEVICE	0x41
> -#define REQTYPE_DEVICE_TO_HOST	0xc1
> +#define REQTYPE_HOST_TO_INTERFACE	0x41
> +#define REQTYPE_INTERFACE_TO_HOST	0xc1
> +#define REQTYPE_HOST_TO_DEVICE	0x40
> +#define REQTYPE_DEVICE_TO_HOST	0xc0


Any particular reason you need to define these instead of just using the
standard flags from linux/usb/ch9.h directly in the requests?:

(USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT)
(USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_IN)
(USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT)
(USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN)

If nothing else, using those from the beginning would have avoided the
mis-labelling you are fixing up.



Bjørn