I hope you all can use this...
I thought I would try using the anydata.c driver to get a couple of CMDA cards
working (reference a thread on the airprime driver and buffer size). I spent
a bunch of time fooling around with pppd configurations before I realized
that there was no data coming back from the cards. After using Kermit to
find that the card was actually getting the data that I was typing (the card
connected even though there was no echo or data coming back), I borrowed
a couple of lines of code from the generic driver to get it working properly.
While I was there, I added a couple of additional cards that I was able to
test with the change.
--- drivers/usb/serial/anydata.c.orig 2006-05-06 03:46:59.000000000 -0700
+++ drivers/usb/serial/anydata.c 2006-05-06 04:02:19.000000000 -0700
@@ -13,12 +13,17 @@
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
#include "usb-serial.h"
+
+/* as long as I'm here, thought I'd add a couple additional cards. cheers */
+
static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */
+ { USB_DEVICE(0x1410, 0x1110) }, /* Novatel S620 EVDO device */
+ { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera KPC 650 EVDO dev */
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
/* if overridden by the user, then use their value for the size of the
@@ -35,10 +40,11 @@
};
static int anydata_open(struct usb_serial_port *port, struct file *filp)
{
char *buffer;
+ struct usb_serial *serial = port->serial;
int result = 0;
dbg("%s - port %d", __FUNCTION__, port->number);
if (buffer_size) {
@@ -63,22 +69,35 @@
port->write_urb->transfer_buffer = buffer;
port->write_urb->transfer_buffer_length = buffer_size;
port->bulk_out_size = buffer_size;
}
+ /* the low latency force and the bulk interrupt check were pulled from
the
+ generic driver code to fix a read problem. Writes seemed OK but
the reads
+ were evaporating before getting back to the application (pppd,
wermit, etc). */
+
+ /* force low_latency on so that our tty_push actually forces the data
through,
+ otherwise it is scheduled, and with high data rates (like with
OHCI) data
+ can get lost. */
+ if (port->tty)
+ port->tty->low_latency = 1;
+
+ /* if we have a bulk interrupt, start reading from it */
+ if (serial->num_bulk_in) {
/* Start reading from the device */
- usb_fill_bulk_urb(port->read_urb, port->serial->dev,
- usb_rcvbulkpipe(port->serial->dev,
- port->bulk_in_endpointAddress),
+ usb_fill_bulk_urb (port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
- usb_serial_generic_write_bulk_callback, port);
+ ((serial->type->read_bulk_callback) ?
+ serial->type->read_bulk_callback :
+ usb_serial_generic_read_bulk_callback),
+ port);
result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result)
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
- __FUNCTION__, result);
+ dev_err(&port->dev, "%s - failed resubmitting read urb, error
%d\n", __FUNCTION__, result);
+ }
return result;
}
static struct usb_serial_driver anydata_device = {
-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid0709&bid&3057&dat1642
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
