[PATCH] qmi-firmware-update: support USB3->USB2 mode changes during upgrade

Bjørn Mork bjorn at mork.no
Tue Jan 23 17:04:56 UTC 2018 

I believe that is how it is supposed to look.  But is there a 'peer'
link in the /sys/bus/usb/devices/2-2/port directory?  And does it point
to usb1/1-0:1.0/usb1-port1?

I think I have to read up on these peer ports too... So far I've just
observed and made assumptions, which might very well be completely
bogus.


Bjørn

Paul Gildea <gildeap at tcd.ie> writes:

> Looking through the directory, there is a peer symlink called *peer* inside
> the symlink *port@ *
>
> [root]# ls -al port
> lrwxrwxrwx    1 root     root             0 Jan 23 16:58 port ->
> ../3-0:1.0/usb3-port3/
>
> [root]# ls -al port/peer
> lrwxrwxrwx    1 root     root             0 Jan 23 17:03 port/peer ->
> ../../../usb4/4-0:1.0/usb4-port3/
>
> --
> Paul
>
>
>
> On 23 January 2018 at 15:17, Paul Gildea <gildeap at tcd.ie> wrote:
>
>> Hi Bjørn,
>>
>> Checked that now and no peer file exists in /sys/bus/usb/devices/2-2/. I
>> don't know what a peer port is so need to look into that.
>>
>>
>> 2-2:1.0/             bMaxPacketSize0      devpath              quirks
>>
>> 2-2:1.10/            bMaxPower            driver@              removable
>>
>> 2-2:1.2/             bNumConfigurations   ep_00/               remove
>>
>> 2-2:1.3/             bNumInterfaces       idProduct            serial
>>
>> 2-2:1.8/             bcdDevice            idVendor             speed
>>
>> authorized           bmAttributes         ltm_capable          subsystem@
>>
>> avoid_reset_quirk    busnum               manufacturer         uevent
>>
>> bConfigurationValue  configuration        maxchild             urbnum
>>
>> bDeviceClass         descriptors          port@                version
>>
>> bDeviceProtocol      dev                  power/
>>
>> bDeviceSubClass      devnum               product
>>
>>
>>
>> --
>> Paul
>>
>> On 23 January 2018 at 15:02, Bjørn Mork <bjorn at mork.no> wrote:
>>
>>> Ouch.  Do you have a
>>>
>>>  /sys/bus/usb/devices/2-2/port/peer
>>>
>>> symlink when the modem is running normally?
>>>
>>>
>>>
>>> Bjørn
>>>
>>> Paul Gildea <gildeap at tcd.ie> writes:
>>>
>>> > Hi Aleksander,
>>> >
>>> > Sorry about the delay being able to test this. I saw you applied Bjørn's
>>> > patch to 1.18.2 and 1.20.0. I tested 1.18.2 now and unfortunately it
>>> didn't
>>> > work. Same result as before with the applicationnot recognising the USB2
>>> > port, rebooting and recognising USB3 port.
>>> >
>>> > [23 Jan 2018, 15:34:09] [Debug] [qfu,utils] operating mode set
>>> >> successfully...
>>> >> [23 Jan 2018, 15:34:09] [Debug] [qfu-updater] reset requested
>>> >> successfully...
>>> >> [23 Jan 2018, 15:34:09] [Debug] [qfu-updater] cleaning up QMI device...
>>> >> [23 Jan 2018, 15:34:09] [Debug] [/dev/cdc-wdm6] Releasing 'dms' client
>>> >> with flags 'none'...
>>> >> [23 Jan 2018, 15:34:09] [Debug] [/dev/cdc-wdm6] Unregistered 'dms'
>>> client
>>> >> with ID '2'
>>> >> rebooting in download mode...
>>> >> [23 Jan 2018, 15:34:09] [Debug] [qfu-updater] reset requested, now
>>> waiting
>>> >> for TTY device...
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove ttyUSB10
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove ttyUSB11
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2:1.0
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2:1.2
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove ttyUSB12
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2:1.3
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove wwan6
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove cdc-wdm6
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2:1.8
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove wwan7
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove cdc-wdm7
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2:1.10
>>> >> [23 Jan 2018, 15:34:27] [Debug] [qfu-udev] event: remove 2-2
>>> >> [23 Jan 2018, 15:34:28] [Debug] [qfu-udev] event: add 1-1
>>> >> [23 Jan 2018, 15:34:28] [Debug] [qfu-udev] event: add 1-1:1.0
>>> >>
>>> >> *[23 Jan 2018, 15:34:28] [Debug] [qfu-udev] event: add ttyUSB10[23 Jan
>>> >> 2018, 15:34:58] [Debug] [qfu-udev] event: remove ttyUSB10*
>>> >> [23 Jan 2018, 15:34:58] [Debug] [qfu-udev] event: remove 1-1:1.0
>>> >> [23 Jan 2018, 15:34:58] [Debug] [qfu-udev] event: remove 1-1
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2:1.3
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2:1.8
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2:1.2
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add cdc-wdm6
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2:1.0
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add 2-2:1.10
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add cdc-wdm7
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] event: add ttyUSB12
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-udev] waiting device (tty)
>>> matched:
>>> >> ttyUSB12
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-updater] TTY device found:
>>> >> /dev/ttyUSB12
>>> >> download mode detected
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-qdl-device] opening TTY:
>>> /dev/ttyUSB12
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-qdl-device] setting terminal in
>>> raw
>>> >> mode...
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu,dload-message] sent sdp:
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-qdl-device] >> 70:00:00 [3,
>>> unframed]
>>> >> [23 Jan 2018, 15:35:07] [Debug] [qfu-qdl-device] >>
>>> 7E:70:00:00:14:46:7E
>>> >> [7]
>>> >> error: error creating device: timed out waiting for the response
>>> >> [23 Jan 2018, 15:35:15] [Debug] [qfu-udev] event: add ttyUSB10
>>> >> [23 Jan 2018, 15:35:15] [Debug] [qfu-udev] event: add wwan6
>>> >> [23 Jan 2018, 15:35:15] [Debug] [qfu-udev] event: add ttyUSB11
>>> >> [23 Jan 2018, 15:35:15] [Debug] [qfu-udev] event: add wwan7
>>> >> [root at Desk /]#
>>> >
>>> >
>>> >
>>> > [  794.874702] usb 2-2: USB disconnect, device number 8
>>> >> [  794.874986] qcserial ttyUSB10: Qualcomm USB modem converter now
>>> >> disconnected from ttyUSB10
>>> >> [  794.874999] qcserial 2-2:1.0: device disconnected
>>> >> [  794.875190] qcserial ttyUSB11: Qualcomm USB modem converter now
>>> >> disconnected from ttyUSB11
>>> >> [  794.875203] qcserial 2-2:1.2: device disconnected
>>> >> [  794.875571] qcserial ttyUSB12: Qualcomm USB modem converter now
>>> >> disconnected from ttyUSB12
>>> >> [  794.875581] qcserial 2-2:1.3: device disconnected
>>> >> [  794.875652] qmi_wwan 2-2:1.8 wwan6: unregister 'qmi_wwan'
>>> >> usb-0000:00:14.0-2, WWAN/QMI device
>>> >> [  794.882022] qmi_wwan 2-2:1.10 wwan7: unregister 'qmi_wwan'
>>> >> usb-0000:00:14.0-2, WWAN/QMI device
>>> >> [  795.579657] usb 1-1: new high-speed USB device number 7 using
>>> xhci_hcd
>>> >> [  795.744560] usb 1-1: New USB device found, idVendor=1199,
>>> idProduct=9070
>>> >> [  795.744564] usb 1-1: New USB device strings: Mfr=1, Product=2,
>>> >> SerialNumber=3
>>> >> [  795.744566] usb 1-1: Product: Sierra Wireless MC7455 Qualcomm
>>> >> [  795.744568] usb 1-1: Manufacturer: Sierra Wireless, Incorporated
>>> >> [  795.744570] usb 1-1: SerialNumber: LQ71474252031020
>>> >> [  795.745059] qcserial 1-1:1.0: Qualcomm USB modem converter detected
>>> >>
>>> >>
>>> >> *[  795.745136] usb 1-1: Qualcomm USB modem converter now attached to
>>> >> ttyUSB10[  825.374390] usb 1-1: USB disconnect, device number 7[
>>> >>  825.374668] qcserial ttyUSB10: Qualcomm USB modem converter now
>>> >> disconnected from ttyUSB10*
>>> >> [  825.374680] qcserial 1-1:1.0: device disconnected
>>> >
>>> >
>>> >
>>> > Regards,
>>> >
>>> > --
>>> > Paul
>>> >
>>> > On 17 January 2018 at 16:59, Paul Gildea <gildeap at tcd.ie> wrote:
>>> >
>>> >> Hi Aleksander,
>>> >>
>>> >> Sure thing, I'll get back to you with the results when I can.
>>> >>
>>> >> Looks good! Thanks guys,
>>> >>
>>> >> --
>>> >> Paul
>>> >>
>>> >> On 17 January 2018 at 16:45, Aleksander Morgado <
>>> aleksander at aleksander.es>
>>> >> wrote:
>>> >>
>>> >>> Hey Paul,
>>> >>>
>>> >>> On Wed, Jan 17, 2018 at 3:02 PM, Bjørn Mork <bjorn at mork.no> wrote:
>>> >>> > Modems operating in USB3 SuperSpeed mode may change to
>>> >>> > USB2 HighSpeed mode while in boot-and-hold. This changes
>>> >>> > the USB port name, causing device matching failure.
>>> >>> >
>>> >>> > Fix by accepting matches on both the original USB(3) port and
>>> >>> > the "peer" USB(2) port.
>>> >>> >
>>> >>>
>>> >>> Any chance you can give this patch a try?
>>> >>>
>>> >>> --
>>> >>> Aleksander
>>> >>> https://aleksander.es
>>> >>>
>>> >>
>>> >>
>>>
>>
>>

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