Inclusion of cdc-acm patch in Ubuntu kernel

[Steve Romanow]

L Torvalds has applied a 3 line patch to cdc-acm module that should help moto q users avoid a return code -22 when trying to tether.

Please see the linked launchpad question.

[Steve Romanow (slestak989)]

https://answers.launchpad.net/ubuntu/+source/linux-source-2.6.20/+question/8582

[Cesare Tirabassi (norsetto)]

This is the patch, specific for BT On-Air:

--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1083,6 +1083,9 @@ static struct usb_device_id acm_ids[] = {
        { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
        .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
        },
+ { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
+ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+ },
        { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
        .driver_info = SINGLE_RX_URB, /* firmware bug */
        },

Can you confirm that the MOTO q Device ID is 22b8:7001?
Have you tried to patch the module yourself to check it is working?

[Steve Romanow (slestak989)]

I have not tried to patch my own. I can, I will try that. Is there a -dev package for the restricted-drivers package? I need to see what package provides cdc-acm.

lsusb shows my device as 22b8:7000 Motorola PCS

The difference could be related to Verizon vs Sprint, I have the Sprint Version, Linus may have had a Verizon unit. I am using an app on the phone called Modem Link, which is similar to PDANet, Mobilestream USBModem. This is the software that comes with the Sprint moto q. I do not get any dmesg output until I run this app on the phone.

I checked and I do not have cdc-acm.c on my laptop currently. May need to refine the kernel patch to include both 7000 and 7001

[Steve Romanow (slestak989)]

I verified that:

when Modem Link is ON, usb id = 22b8:7001
when Modem Link is OFF, usb id = 22b8:7000

I am downloading kernel sources now.

[Steve Romanow (slestak989)]

The original git link I provided was for a similar device, but the actual patch for the Q is at:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/usb/class/cdc-acm.c;h=0081c1d12687de6f8813efb11e0f338c7d7d28a5;hb=HEAD

[Steve Romanow (slestak989)]

Okay. It does work. The last git url i pasted is specifically for the Q. Anyone who is using this for their Q, do not have it connected to your laptop when you start modem link, the cdc-acm driver will not detect your phone and /dev/ttyACM0 will not be created. Start the Modem Link software, then press Activate, THEN plug the USB cable in to your laptop.

[binarypower (binarypower)]

Still getting the "error -22" after putting it into "modem mode" (activated before i plugged it in). Has this patch been applied to the current Ubuntu Kernel?

[Steve Romanow (slestak989)]

I do not think it has. There has been no kernel release from apt since i rebuilt my cdc-acm.ko

We can compare notes and if we have the same kernel package, i will email you my .ko

Steve

-----Original Message-----
From: "binarypower" <email address hidden>
To: <email address hidden>
Sent: 7/9/2007 3:44 PM
Subject: [Bug 121762] Re: Inclusion of cdc-acm patch in Ubuntu kernel

Still getting the "error -22" after putting it into "modem mode"
(activated before i plugged it in). Has this patch been applied to the
current Ubuntu Kernel?

--
Inclusion of cdc-acm patch in Ubuntu kernel
https://bugs.launchpad.net/bugs/121762
You received this bug notification because you are a direct subscriber
of the bug.

[binarypower (binarypower)]

I rebuilt the entire kernel from 2.6.22. This corrected my issue but now my
wifi stopped working... the whole bcm43xx issue... lotsa fun. Anyway, thanks
for helping me isolate the issue!

On 7/10/07, Steve Romanow <email address hidden> wrote:
>
> I do not think it has. There has been no kernel release from apt since
> i rebuilt my cdc-acm.ko
>
> We can compare notes and if we have the same kernel package, i will
> email you my .ko
>
> Steve
>
> -----Original Message-----
> From: "binarypower" <email address hidden>
> To: <email address hidden>
> Sent: 7/9/2007 3:44 PM
> Subject: [Bug 121762] Re: Inclusion of cdc-acm patch in Ubuntu kernel
>
> Still getting the "error -22" after putting it into "modem mode"
> (activated before i plugged it in). Has this patch been applied to the
> current Ubuntu Kernel?
>
> --
> Inclusion of cdc-acm patch in Ubuntu kernel
> https://bugs.launchpad.net/bugs/121762
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> --
> Inclusion of cdc-acm patch in Ubuntu kernel
> https://bugs.launchpad.net/bugs/121762
> You received this bug notification because you are a direct subscriber
> of the bug.
>

[Chuck Short (zulcss)]

This has already been fixed in gutsy.

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.