This function is never called now. Because we don`t send much data
to the device, only one byte via usb_interrupt_msg(). That doesn't require
callback function. But without declaration of write_int_callback inside
the struct usb_serial_driver, the usb_serial_probe doesn't initialize
endpoint address for the interrupt out pipe(interrupt_out_endpointAddress).
This endpoint is necessary for sending data via usb_interrupt_msg()
function.
Signed-off-by: Aleksey Babahin <tamerlan311@xxxxxxxxx>
---
drivers/usb/serial/metro-usb.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index 08d16e8..92b6f85 100644
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -136,6 +136,14 @@ exit:
__func__, result);
}
+static void metrousb_write_int_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+
+ dev_warn(&port->dev, "%s not implemented yet.\n",
+ __func__);
+}
+
static void metrousb_cleanup(struct usb_serial_port *port)
{
dev_dbg(&port->dev, "%s\n", __func__);
@@ -377,6 +385,7 @@ static struct usb_serial_driver metrousb_device = {
.open = metrousb_open,
.close = metrousb_cleanup,
.read_int_callback = metrousb_read_int_callback,
+ .write_int_callback = metrousb_write_int_callback,
.attach = metrousb_startup,
.release = metrousb_shutdown,
.throttle = metrousb_throttle,
--
1.7.5.4
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