OPN2001 expects write operations to arrive as a vendor-specific command
through the control pipe (instead of using a separate bulk-out pipe).
Signed-off-by: Alon Ziv <alon-git@xxxxxxxxxxx>
---
drivers/usb/serial/opticon.c | 30 ++++++++++++++++++++++++++----
1 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 9ff19c8..4fe7c3d 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -187,6 +187,9 @@ static void opticon_write_bulk_callback(struct urb *urb)
/* free up the transfer buffer, as usb_free_urb() does not do this */
kfree(urb->transfer_buffer);
+ /* setup packet may be set if we're using it for writing */
+ kfree(urb->setup_packet);
+
if (status)
dbg("%s - nonzero write bulk status received: %d",
__func__, status);
@@ -237,10 +240,29 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
- usb_fill_bulk_urb(urb, serial->dev,
- usb_sndbulkpipe(serial->dev,
- port->bulk_out_endpointAddress),
- buffer, count, opticon_write_bulk_callback, priv);
+ if (port->bulk_out_endpointAddress) {
+ usb_fill_bulk_urb(urb, serial->dev,
+ usb_sndbulkpipe(serial->dev,
+ port->bulk_out_endpointAddress),
+ buffer, count, opticon_write_bulk_callback, priv);
+ } else {
+ struct usb_ctrlrequest *dr;
+
+ dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_NOIO);
+ if (!dr)
+ return -ENOMEM;
+
+ dr->bRequestType = USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT;
+ dr->bRequest = 0x01;
+ dr->wValue = 0;
+ dr->wIndex = 0;
+ dr->wLength = cpu_to_le16(count);
+
+ usb_fill_control_urb(urb, serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ (unsigned char *)dr, buffer, count,
+ opticon_write_bulk_callback, priv);
+ }
/* send it down the pipe */
status = usb_submit_urb(urb, GFP_ATOMIC);
--
1.6.3.3
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