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>
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 @@
};
/* 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
/* Config request codes */
#define CP210X_IFC_ENABLE 0x00
@@ -286,7 +288,7 @@
/* Issue the request, attempting to read 'size' bytes */
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- request, REQTYPE_DEVICE_TO_HOST, 0x0000,
+ request, REQTYPE_INTERFACE_TO_HOST, 0x0000,
port_priv->bInterfaceNumber, buf, size,
USB_CTRL_GET_TIMEOUT);
@@ -340,13 +342,13 @@
if (size > 2) {
result = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
- request, REQTYPE_HOST_TO_DEVICE, 0x0000,
+ request, REQTYPE_HOST_TO_INTERFACE, 0x0000,
port_priv->bInterfaceNumber, buf, size,
USB_CTRL_SET_TIMEOUT);
} else {
result = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
- request, REQTYPE_HOST_TO_DEVICE, data[0],
+ request, REQTYPE_HOST_TO_INTERFACE, data[0],
port_priv->bInterfaceNumber, NULL, 0,
USB_CTRL_SET_TIMEOUT);
}