From 32445605fc2ff967326c14156f199e620ed81c10 Mon Sep 17 00:00:00 2001 From: Preston Fick Date: Mon, 30 Apr 2012 23:06:48 -0500 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index ec30f95ef39..e67ccf3b18d 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 /* Config request codes */ #define CP210X_IFC_ENABLE 0x00 @@ -286,7 +288,7 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request, /* 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 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request, 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); } -- 2.41.0