usb 3-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
dvbdev: DVB: registering new adapter (Hauppauge 126xxx ATSC)
usb 3-1: media controller created
dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
usb 3-1: selecting invalid altsetting 1
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: 0 PID: 2775 Comm: kworker/0:5 Not tainted 5.2.0-rc6+ #15
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:775 [inline]
 register_lock_class+0x11ae/0x1240 kernel/locking/lockdep.c:1084
 __lock_acquire+0x11d/0x5340 kernel/locking/lockdep.c:3674
 lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4303
 __mutex_lock_common kernel/locking/mutex.c:926 [inline]
 __mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1073
 mxl111sf_ctrl_msg+0xb8/0x210 drivers/media/usb/dvb-usb-v2/mxl111sf.c:66
 mxl111sf_write_reg+0x8b/0x120 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl1x1sf_soft_reset+0x6b/0x190 drivers/media/usb/dvb-usb-v2/mxl111sf-phy.c:47
 mxl111sf_lgdt3305_frontend_attach.constprop.0+0x23e/0x790 drivers/media/usb/dvb-usb-v2/mxl111sf.c:447
 dvb_usbv2_adapter_frontend_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:641 [inline]
 dvb_usbv2_adapter_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:804 [inline]
 dvb_usbv2_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:865 [inline]
 dvb_usbv2_probe.cold+0x1e04/0x255d drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:980
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2111
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2111
 usb_new_device.cold+0x6a4/0xe61 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
 port_event drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1abd/0x3550 drivers/usb/core/hub.c:5441
 process_one_work+0x905/0x1570 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x30b/0x410 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
usb 3-1: dvb_usb_v2: usb_bulk_msg() failed=-22
error writing reg: 0xff, val: 0x00
dvb_usb_mxl111sf: probe of 3-1:255.0 failed with error -22
usb 3-1: USB disconnect, device number 51
usb 3-1: new high-speed USB device number 52 using dummy_hcd
usb 3-1: device descriptor read/64, error 18
usb 3-1: device descriptor read/64, error 18
usb 3-1: new high-speed USB device number 53 using dummy_hcd
usb 3-1: device descriptor read/64, error 18
usb 3-1: device descriptor read/64, error 18
usb usb3-port1: attempt power cycle
usb 3-1: new high-speed USB device number 54 using dummy_hcd
usb 3-1: device descriptor read/64, error 18
usb 3-1: device descriptor read/64, error -71
usb 3-1: new high-speed USB device number 55 using dummy_hcd
usb 3-1: config 248 has an invalid interface number: 110 but max is 0
usb 3-1: config 248 has no interface number 0
usb 3-1: New USB device found, idVendor=0cde, idProduct=0001, bcdDevice=76.3c
usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 3-1: Direct firmware load for atmel_at76c503-i3861.bin failed with error -2
usb 3-1: firmware atmel_at76c503-i3861.bin not found!
usb 3-1: you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/
at76c50x-usb: probe of 3-1:248.110 failed with error -2
usb 1-1: USB disconnect, device number 38
usb 1-1: new high-speed USB device number 39 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 32
usb 1-1: config 0 has an invalid interface number: 61 but max is 0
usb 1-1: config 0 has no interface number 0
usb 1-1: New USB device found, idVendor=0499, idProduct=5004, bcdDevice=38.37
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
snd-usb-audio: probe of 1-1:0.61 failed with error -2
usb 4-1: new high-speed USB device number 52 using dummy_hcd
usb 4-1: Using ep0 maxpacket: 8
usb 4-1: config 0 has an invalid interface number: 17 but max is 0
usb 4-1: config 0 has no interface number 0
usb 4-1: New USB device found, idVendor=18d1, idProduct=1eaf, bcdDevice=d9.b8
usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 4-1: config 0 descriptor??
usb 4-1: Not enough endpoints found in device, aborting!
usb 4-1: USB disconnect, device number 52