usb 6-1: string descriptor 0 read error: -71 usb 6-1: dvb_usb_v2: found a 'Hauppauge 138xxx DVBT' in warm state usb 6-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer dvbdev: DVB: registering new adapter (Hauppauge 138xxx DVBT) usb 6-1: selecting invalid altsetting 2 set interface failed INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 5623 Comm: kworker/1:3 Not tainted 5.1.0-rc3+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 assign_lock_key kernel/locking/lockdep.c:786 [inline] register_lock_class+0x11ae/0x1240 kernel/locking/lockdep.c:1095 __lock_acquire+0xfb/0x37c0 kernel/locking/lockdep.c:3582 lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4211 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1072 mxl111sf_ctrl_msg+0xb8/0x210 drivers/media/usb/dvb-usb-v2/mxl111sf.c:69 mxl111sf_write_reg+0x8b/0x120 drivers/media/usb/dvb-usb-v2/mxl111sf.c:126 mxl1x1sf_soft_reset+0x6b/0x190 drivers/media/usb/dvb-usb-v2/mxl111sf-phy.c:56 mxl111sf_attach_demod+0x279/0x730 drivers/media/usb/dvb-usb-v2/mxl111sf.c:768 dvb_usbv2_adapter_frontend_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:654 [inline] dvb_usbv2_adapter_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:817 [inline] dvb_usbv2_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:878 [inline] dvb_usbv2_probe.cold+0x1caf/0x238e drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:993 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361 really_probe+0x296/0x680 drivers/base/dd.c:509 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454 __device_attach+0x21e/0x360 drivers/base/dd.c:844 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514 device_add+0xaf4/0x1700 drivers/base/core.c:2106 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266 really_probe+0x296/0x680 drivers/base/dd.c:509 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454 __device_attach+0x21e/0x360 drivers/base/dd.c:844 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514 device_add+0xaf4/0x1700 drivers/base/core.c:2106 usb_new_device.cold+0x8b8/0x1030 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 kthread+0x30e/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 usb 6-1: dvb_usb_v2: usb_bulk_msg() failed=-22 error writing reg: 0xff, val: 0x00 dvb_usb_mxl111sf: probe of 6-1:0.0 failed with error -22 dummy_hcd dummy_hcd.5: port status 0x00010101 has changes usb 6-1: USB disconnect, device number 92 dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: new high-speed USB device number 93 using dummy_hcd dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: Using ep0 maxpacket: 8 usb 6-1: New USB device found, idVendor=2040, idProduct=d864, bcdDevice=cd.31 usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 6-1: config 0 descriptor?? usb 6-1: string descriptor 0 read error: -71 usb 6-1: dvb_usb_v2: found a 'Hauppauge 138xxx DVBT' in warm state usb 6-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer dvbdev: DVB: registering new adapter (Hauppauge 138xxx DVBT) usb 6-1: selecting invalid altsetting 2 set interface failed usb 6-1: dvb_usb_v2: usb_bulk_msg() failed=-22 error writing reg: 0xff, val: 0x00 dvb_usb_mxl111sf: probe of 6-1:0.0 failed with error -22 dummy_hcd dummy_hcd.5: port status 0x00010101 has changes usb 6-1: USB disconnect, device number 93 dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: new high-speed USB device number 94 using dummy_hcd dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: Using ep0 maxpacket: 8 usb 6-1: New USB device found, idVendor=069a, idProduct=0001, bcdDevice=a9.23 usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 6-1: config 0 descriptor?? pwc: Askey VC010 type 1 USB webcam detected. pwc: recv_control_msg error -71 req 02 val 2900 pwc: recv_control_msg error -71 req 02 val 2800 pwc: recv_control_msg error -71 req 04 val 1100 pwc: recv_control_msg error -71 req 04 val 1200 pwc: Registered as video0. input: PWC snapshot button as /devices/platform/dummy_hcd.5/usb6/6-1/input/input126 dummy_hcd dummy_hcd.5: port status 0x00010100 has changes usb 6-1: USB disconnect, device number 94 dummy_hcd dummy_hcd.5: port status 0x00010101 has changes dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: new high-speed USB device number 95 using dummy_hcd dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: Using ep0 maxpacket: 8 usb 6-1: New USB device found, idVendor=069a, idProduct=0001, bcdDevice=a9.23 usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 6-1: config 0 descriptor?? pwc: Askey VC010 type 1 USB webcam detected. pwc: recv_control_msg error -71 req 06 val 0c00 pwc: send_video_command error -71 pwc: Failed to set video mode CIF@30 fps; return code = -71 Philips webcam: probe of 6-1:0.0 failed with error -71 dummy_hcd dummy_hcd.5: port status 0x00010101 has changes usb 6-1: USB disconnect, device number 95 dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: new high-speed USB device number 96 using dummy_hcd dummy_hcd dummy_hcd.5: port status 0x00100503 has changes usb 6-1: Using ep0 maxpacket: 8 usb 6-1: New USB device found, idVendor=069a, idProduct=0001, bcdDevice=a9.23 usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 6-1: config 0 descriptor?? pwc: Askey VC010 type 1 USB webcam detected. pwc: recv_control_msg error -71 req 02 val 2900 pwc: recv_control_msg error -71 req 02 val 2800 pwc: recv_control_msg error -71 req 04 val 1100 pwc: recv_control_msg error -71 req 04 val 1200 pwc: Registered as video0. input: PWC snapshot button as /devices/platform/dummy_hcd.5/usb6/6-1/input/input128 dummy_hcd dummy_hcd.5: port status 0x00010100 has changes usb 6-1: USB disconnect, device number 96 usb usb6: dummy_bus_suspend usb usb4: dummy_bus_resume dummy_hcd dummy_hcd.3: port status 0x00010101 has changes dummy_hcd dummy_hcd.3: port status 0x00100503 has changes usb 4-1: new high-speed USB device number 107 using dummy_hcd dummy_hcd dummy_hcd.3: port status 0x00100503 has changes usb 4-1: Using ep0 maxpacket: 8 usb 4-1: New USB device found, idVendor=069a, idProduct=0001, bcdDevice=a9.23 usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 4-1: config 0 descriptor?? pwc: Askey VC010 type 1 USB webcam detected. pwc: recv_control_msg error -71 req 02 val 2900 pwc: recv_control_msg error -71 req 02 val 2800 pwc: recv_control_msg error -71 req 04 val 1100 pwc: recv_control_msg error -71 req 04 val 1200 pwc: Registered as video0. input: PWC snapshot button as /devices/platform/dummy_hcd.3/usb4/4-1/input/input132 dummy_hcd dummy_hcd.3: port status 0x00010100 has changes usb 4-1: USB disconnect, device number 107 usb usb4: dummy_bus_suspend