EM7565 enumeration

[Reinhard Speyerer]

On Wed, Sep 26, 2018 at 04:04:09PM +0100, Paul Gildea wrote:
> I've patched my 4.7.8 kernel with the patch above, referenced by
> Aleksander, and now I get somewhat expected and somewhat unexpected
> behaviour.
> Firstly, the modem at times does appear and a wwan and cdc-wdm interface is
> created. The cdc-wdm can be queried with libqmi successfully.
> 
> 
> qmicli --device-open-qmi -p -d /dev/cdc-wdm0 --dms-get-operating-mode
> 
> [/dev/cdc-wdm0] Operating mode retrieved:
> 
>         Mode: 'online'
> 
>         HW restricted: 'no'
> 
> The first issue is that no USB interfaces are enumerated, and I expect the
> usual three should be:
> 
> [  236.545123] usb 3-4: new high-speed USB device number 12 using xhci_hcd
> 
> [  236.713281] usb 3-4: config 1 has an invalid interface number: 8 but max
> is 3
> [  236.713285] usb 3-4: config 1 has no interface number 1
> 
> [  236.715902] usb 3-4: New USB device found, idVendor=1199, idProduct=9091
> 
> [  236.715906] usb 3-4: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [  236.715909] usb 3-4: Product: Sierra Wireless EM7565
> Qualcomm\xffffffc2\xffffffae Snapdragon\xffffffe2\xffffff84\xffffffa2 X16
> LTE-A
> [  236.715911] usb 3-4: Manufacturer: Sierra Wireless, Incorporated
> 
> [  236.715912] usb 3-4: SerialNumber: d470b623
> 
> [  236.725823] qmi_wwan 3-4:1.8: cdc-wdm0: USB WDM device
> 
> [  236.726017] qmi_wwan 3-4:1.8 wwan0: register 'qmi_wwan' at
> usb-0000:06:00.0-4, WWAN/QMI device, 1e:3c:de:67:26:b1

Hi Paul,

if you want your kernel to support the EM7565 serial ports you also
have to apply this patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/drivers/usb/serial/qcserial.c?id=92a18a657fb2e2ffbfa0659af32cc18fd2346516

Regards,
Reinhard