@henrix: that's a part of the output after applying the patch: now, the usb modem reconnect just fine [ 5588.532572] usb 1-1.2: USB disconnect, device number 6 [ 5588.534775] option1 ttyUSB0: option_instat_callback: error -108 [ 5588.534896] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [ 5588.534910] option 1-1.2:1.0: device disconnected [ 5588.535946] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.536195] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.536993] qmi_wwan 1-1.2:1.1 wwan0: unregister 'qmi_wwan' usb-0000:00:1a.0-1.2, WWAN/QMI device [ 5588.540203] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.540448] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.544455] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.544701] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.548710] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.548955] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19) [ 5588.565315] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1 [ 5588.565324] option 1-1.2:1.3: device disconnected [ 5588.565431] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2 [ 5588.565438] option 1-1.2:1.4: device disconnected [ 5593.449299] usb 1-1.2: new high-speed USB device number 7 using ehci-pci [ 5593.544252] usb 1-1.2: New USB device found, idVendor=12d1, idProduct=1446 [ 5593.544263] usb 1-1.2: New USB device strings: Mfr=3, Product=2, SerialNumber=0 [ 5593.544269] usb 1-1.2: Product: HUAWEI Mobile [ 5593.544275] usb 1-1.2: Manufacturer: Huawei Technologies [ 5593.645087] usb-storage 1-1.2:1.0: USB Mass Storage device detected [ 5593.649366] scsi11 : usb-storage 1-1.2:1.0 [ 5593.649674] usb-storage 1-1.2:1.1: USB Mass Storage device detected [ 5593.657369] scsi12 : usb-storage 1-1.2:1.1 [ 5595.452470] usb 1-1.2: USB disconnect, device number 7 [ 5599.354268] usb 1-1.2: new high-speed USB device number 8 using ehci-pci [ 5599.448843] usb 1-1.2: New USB device found, idVendor=12d1, idProduct=1506 [ 5599.448847] usb 1-1.2: New USB device strings: Mfr=4, Product=3, SerialNumber=0 [ 5599.448850] usb 1-1.2: Product: HUAWEI Mobile [ 5599.448851] usb 1-1.2: Manufacturer: Huawei Technologies [ 5599.548996] option 1-1.2:1.0: GSM modem (1-port) converter detected [ 5599.549102] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB0 [ 5599.549216] option 1-1.2:1.1: GSM modem (1-port) converter detected [ 5599.549287] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB1 [ 5599.549379] option 1-1.2:1.2: GSM modem (1-port) converter detected [ 5599.549448] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB2 [ 5599.549502] option 1-1.2:1.3: GSM modem (1-port) converter detected [ 5599.549569] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB3 [ 5599.549624] option 1-1.2:1.4: GSM modem (1-port) converter detected [ 5599.549701] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB4 [ 5599.549753] usb-storage 1-1.2:1.5: USB Mass Storage device detected [ 5599.554363] scsi13 : usb-storage 1-1.2:1.5 [ 5599.554504] usb-storage 1-1.2:1.6: USB Mass Storage device detected [ 5599.562373] scsi14 : usb-storage 1-1.2:1.6 [ 5603.894368] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5603.894379] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5603.894385] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5603.894390] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5603.994546] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5603.994556] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5603.994561] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5603.994566] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.094707] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.094718] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.094723] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.094727] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.195453] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.195459] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.195461] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.195463] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.295819] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.295825] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.295827] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.295828] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.396179] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.396185] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.396187] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.396188] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.496431] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.496436] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.496437] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.496439] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.596677] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.596681] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.596684] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.596685] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.696922] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.696927] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.696930] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.696931] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.797170] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.797175] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.797176] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.797178] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.897417] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.897422] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.897424] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.897426] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5604.997670] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5604.997675] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5604.997677] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5604.997679] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.097921] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.097926] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.097928] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.097930] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.198168] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.198173] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.198176] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.198177] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.298416] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.298421] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.298423] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.298425] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.398672] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.398677] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.398679] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.398680] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.498929] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.498934] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.498936] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.498938] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.568774] scsi 13:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 [ 5605.571913] sr1: scsi-1 drive [ 5605.572613] sr 13:0:0:0: Attached scsi CD-ROM sr1 [ 5605.572912] sr 13:0:0:0: Attached scsi generic sg2 type 5 [ 5605.584788] scsi 14:0:0:0: Direct-Access HUAWEI TF CARD Storage PQ: 0 ANSI: 2 [ 5605.585037] sd 14:0:0:0: Attached scsi generic sg3 type 0 [ 5605.589288] sd 14:0:0:0: [sdb] Attached SCSI removable disk [ 5605.599183] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.599188] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.599190] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.599192] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.699438] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.699443] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.699445] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.699447] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.799707] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.799711] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.799713] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.799715] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5605.899950] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5605.899955] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5605.899957] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5605.899959] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.000194] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.000199] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.000201] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.000203] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.100441] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.100445] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.100448] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.100449] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.200725] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.200736] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.200742] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.200747] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.301030] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.301040] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.301045] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.301050] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.401333] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.401344] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.401350] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.401355] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.501640] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.501651] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.501657] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.501662] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.601954] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.601965] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.601971] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.601977] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.702273] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.702283] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.702289] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.702293] option1 ttyUSB1: usb_wwan_write: Invalid URB [3] [ 5606.802586] option1 ttyUSB1: usb_wwan_write: Invalid URB [0] [ 5606.802597] option1 ttyUSB1: usb_wwan_write: Invalid URB [1] [ 5606.802602] option1 ttyUSB1: usb_wwan_write: Invalid URB [2] [ 5606.802607] option1 ttyUSB1: usb_wwan_write: Invalid URB [3]