I tried this patch-set today, applied to linux-next-20120727. As the RFC "Fixing usb_wwan NULL pointer dereferencing" set from yesterday it did help to avoid oopses while unplugging the stick.
That is the good thing. But there is still a problem - wwan0 doesn't work. /dev/cdc-wdm0 answers to the cli-tool from libqmi. /dev/USBX answers to AT-commands via minicom. As with kernel 3.4 and 3.5 I use for connecting the "qmi-ifupdown" script provided by Bjørn some months ago. But despite "VERBOSITY=true" and "IF_WWAN_DEBUG=1" I see nothing. The script quits without output. After that dhcpcd says only: err, wwan0: timed out warn, wwan0: using IPV4ALL address 169.254.41.53 The IPv6-variation of the scripts did not work too. Booting older kernel (3.4, 3.5 release, 3.5rc6 ) it works with all the qmi- able-devices I have. huawei E398 (3.4, 3.5) vodafone/ZTE K3565Z (3.4,3.5) vodafone/huawei K5005(3.5) O2/ZTE MF821D (3.5 + patches) For the moment linux-next does not work. Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html