usb: cp210x: Corrected USB request type definitions
The original request types in the cp210x driver are labled as "DEVICE_TO_HOST" and "HOST_TO_DEVICE" but the actual bit definition corresponds to a request to the interface. This has been corrected, and the actual definition for the device requests have been added. Signed-off-by: Preston Fick <preston.fick@silabs.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -188,8 +188,10 @@ static struct usb_serial_driver * const serial_drivers[] = {
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};
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/* Config request types */
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#define REQTYPE_HOST_TO_DEVICE 0x41
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#define REQTYPE_DEVICE_TO_HOST 0xc1
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#define REQTYPE_HOST_TO_INTERFACE 0x41
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#define REQTYPE_INTERFACE_TO_HOST 0xc1
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#define REQTYPE_HOST_TO_DEVICE 0x40
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#define REQTYPE_DEVICE_TO_HOST 0xc0
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/* Config request codes */
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#define CP210X_IFC_ENABLE 0x00
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@ -286,7 +288,7 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
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/* Issue the request, attempting to read 'size' bytes */
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result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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request, REQTYPE_DEVICE_TO_HOST, 0x0000,
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request, REQTYPE_INTERFACE_TO_HOST, 0x0000,
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port_priv->bInterfaceNumber, buf, size,
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USB_CTRL_GET_TIMEOUT);
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@ -340,13 +342,13 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
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if (size > 2) {
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result = usb_control_msg(serial->dev,
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usb_sndctrlpipe(serial->dev, 0),
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request, REQTYPE_HOST_TO_DEVICE, 0x0000,
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request, REQTYPE_HOST_TO_INTERFACE, 0x0000,
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port_priv->bInterfaceNumber, buf, size,
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USB_CTRL_SET_TIMEOUT);
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} else {
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result = usb_control_msg(serial->dev,
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usb_sndctrlpipe(serial->dev, 0),
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request, REQTYPE_HOST_TO_DEVICE, data[0],
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request, REQTYPE_HOST_TO_INTERFACE, data[0],
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port_priv->bInterfaceNumber, NULL, 0,
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USB_CTRL_SET_TIMEOUT);
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}
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