On Sat, May 06, 2006 at 04:42:35AM -0700, Thomas L. Marshall wrote:
> 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
Take a look at Documentation/SubmittingPatches for how to properly
format patches so that they can be applied (proper patch directory
level, Signed-off-by: line, etc.)
> @@ -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 */
> +
That really can't be added as part of the driver :)
> 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;
Please use tabs instead of spaces. See Documentation/CodingStyle for
more details as to the proper kernel coding style.
> 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). */
This commend doesn't need to be here. Put it in the changelog comments
instead.
> + /* 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);
Why the callback change? We know what this will be :)
> 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);
> + }
Why change this line? It's now over 80 columns long (see CodingStyle
again...)
thanks,
greg k-h
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