Em Wed, 7 Dec 2016 12:22:01 -0200
Mauro Carvalho Chehab <mche...@s-opensource.com> escreveu:
> Em Tue, 6 Dec 2016 13:41:38 -0200
> Mauro Carvalho Chehab <mche...@s-opensource.com> escreveu:
>
> > Em Tue, 6 Dec 2016 01:06:17 +0200
> > Antti Palosaari <cr...@iki.fi> escreveu:
> >
> > > Hello Mauro
> > > I just noticed current em28xx driver seem to be broken. When I plug
> > > device first time it loads correctly, but when I re-plug it, it does not
> > > work anymore but yells a lot of noise to message log. Tested with PCTV
> > > 290e and 292e both same. Other USB DVB devices are working so it is very
> > > likely em28xx driver bug.
> > >
> > > Easy to reproduce:
> > > plug device
> > > unplug device
> > > plug device
> >
> >
> > Are you referring to those:
> >
> > [ 1010.310320] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31
> > sysfs_warn_dup+0x7b/0x90
> > [ 1010.310323] sysfs: cannot create duplicate filename
> > '/bus/usb/devices/1-3.3'
> > [ 1010.310325] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa
> > tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops
> > videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media
> > xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
> > iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
> > xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge
> > stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter
> > ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative
> > cpufreq_userspace binfmt_misc parport_pc ppdev lp parport
> > snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support
> > snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm
> > intel_powerclamp coretemp kvm_intel mac80211 kvm i915
> > [ 1010.310383] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
> > iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul
> > glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper
> > cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel
> > snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me
> > i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich
> > shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress
> > snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi
> > mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match
> > i2c_designware_platform video i2c_designware_core acpi_pad acpi_als
> > kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2
> > fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp
> > [ 1010.310449] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel
> > libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal
> > [ 1010.310464] CPU: 3 PID: 119 Comm: kworker/3:2 Not tainted 4.9.0-rc8+ #14
> > [ 1010.310466] Hardware name: /NUC5i7RYB, BIOS
> > RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
> > [ 1010.310487] Workqueue: usb_hub_wq hub_event [usbcore]
> > [ 1010.310490] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858
> > 0000000000000000
> > [ 1010.310496] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07
> > ffff8803b1f7f8f0
> > [ 1010.310501] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef
> > ffff8803b45c6840
> > [ 1010.310505] Call Trace:
> > [ 1010.310517] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77
> > [ 1010.310522] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0
> > [ 1010.310526] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0
> > [ 1010.310529] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0
> > [ 1010.310534] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0
> > [ 1010.310539] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60
> > [ 1010.310543] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90
> > [ 1010.310547] [<ffffffff846f6f26>] ?
> > sysfs_do_create_link_sd.isra.2+0xb6/0xd0
> > [ 1010.310553] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0
> > [ 1010.310557] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110
> > [ 1010.310562] [<ffffffff84ccff87>] ? device_add+0x777/0x1350
> > [ 1010.310567] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180
> > [ 1010.310583] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore]
> > [ 1010.310598] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore]
> > [ 1010.310604] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0
> > [ 1010.310618] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280
> > [usbcore]
> > [ 1010.310624] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80
> > [ 1010.310629] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770
> > [ 1010.310633] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390
> > [ 1010.310638] [<ffffffff84541783>] ? cache_reap+0x173/0x200
> > [ 1010.310642] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60
> > [ 1010.310646] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0
> > [ 1010.310650] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160
> > [ 1010.310654] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60
> > [ 1010.310658] [<ffffffff841a837c>] ? kthread+0x1cc/0x220
> > [ 1010.310663] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.310667] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.310671] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.310675] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30
> > [ 1010.310698] ---[ end trace 49b46eb633ff1197 ]---
> > [ 1010.311298] usb 1-3.3: can't device_add, error -17
> > [ 1010.390703] usb 1-3.3: new high-speed USB device number 9 using xhci_hcd
> > [ 1010.496337] usb 1-3.3: New USB device found, idVendor=2040,
> > idProduct=6513
> > [ 1010.496343] usb 1-3.3: New USB device strings: Mfr=0, Product=1,
> > SerialNumber=2
> > [ 1010.496345] usb 1-3.3: Product: WinTV HVR-980
> > [ 1010.496347] usb 1-3.3: SerialNumber: 4028449018
> > [ 1010.497259] ------------[ cut here ]------------
> > [ 1010.497264] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31
> > sysfs_warn_dup+0x7b/0x90
> > [ 1010.497266] sysfs: cannot create duplicate filename
> > '/bus/usb/devices/1-3.3'
> > [ 1010.497267] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa
> > tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops
> > videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media
> > xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
> > iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
> > xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge
> > stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter
> > ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative
> > cpufreq_userspace binfmt_misc parport_pc ppdev lp parport
> > snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support
> > snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm
> > intel_powerclamp coretemp kvm_intel mac80211 kvm i915
> > [ 1010.497307] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
> > iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul
> > glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper
> > cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel
> > snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me
> > i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich
> > shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress
> > snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi
> > mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match
> > i2c_designware_platform video i2c_designware_core acpi_pad acpi_als
> > kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2
> > fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp
> > [ 1010.497352] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel
> > libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal
> > [ 1010.497362] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W
> > 4.9.0-rc8+ #14
> > [ 1010.497363] Hardware name: /NUC5i7RYB, BIOS
> > RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
> > [ 1010.497377] Workqueue: usb_hub_wq hub_event [usbcore]
> > [ 1010.497379] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858
> > 0000000000000000
> > [ 1010.497382] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07
> > ffff8803b1f7f8f0
> > [ 1010.497385] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef
> > ffff8803b45c6840
> > [ 1010.497387] Call Trace:
> > [ 1010.497395] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77
> > [ 1010.497398] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0
> > [ 1010.497400] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0
> > [ 1010.497402] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0
> > [ 1010.497405] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0
> > [ 1010.497408] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60
> > [ 1010.497410] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90
> > [ 1010.497412] [<ffffffff846f6f26>] ?
> > sysfs_do_create_link_sd.isra.2+0xb6/0xd0
> > [ 1010.497416] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0
> > [ 1010.497419] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110
> > [ 1010.497421] [<ffffffff84ccff87>] ? device_add+0x777/0x1350
> > [ 1010.497424] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180
> > [ 1010.497433] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore]
> > [ 1010.497441] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore]
> > [ 1010.497445] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0
> > [ 1010.497454] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280
> > [usbcore]
> > [ 1010.497457] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80
> > [ 1010.497460] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770
> > [ 1010.497462] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390
> > [ 1010.497465] [<ffffffff84541783>] ? cache_reap+0x173/0x200
> > [ 1010.497468] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60
> > [ 1010.497470] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0
> > [ 1010.497473] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160
> > [ 1010.497475] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60
> > [ 1010.497477] [<ffffffff841a837c>] ? kthread+0x1cc/0x220
> > [ 1010.497480] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.497482] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.497485] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.497487] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30
> > [ 1010.497489] ---[ end trace 49b46eb633ff1198 ]---
> > [ 1010.497829] usb 1-3.3: can't device_add, error -17
> > [ 1010.578707] usb 1-3.3: new high-speed USB device number 10 using xhci_hcd
> > [ 1010.604448] usb 1-3.3: New USB device found, idVendor=2040,
> > idProduct=6513
> > [ 1010.604452] usb 1-3.3: New USB device strings: Mfr=0, Product=1,
> > SerialNumber=2
> > [ 1010.604454] usb 1-3.3: Product: WinTV HVR-980
> > [ 1010.604456] usb 1-3.3: SerialNumber: 4028449018
> > [ 1010.605369] ------------[ cut here ]------------
> > [ 1010.605374] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31
> > sysfs_warn_dup+0x7b/0x90
> > [ 1010.605375] sysfs: cannot create duplicate filename
> > '/bus/usb/devices/1-3.3'
> > [ 1010.605376] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa
> > tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops
> > videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media
> > xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
> > iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
> > xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge
> > stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter
> > ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative
> > cpufreq_userspace binfmt_misc parport_pc ppdev lp parport
> > snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support
> > snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm
> > intel_powerclamp coretemp kvm_intel mac80211 kvm i915
> > [ 1010.605415] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
> > iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul
> > glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper
> > cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel
> > snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me
> > i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich
> > shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress
> > snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi
> > mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match
> > i2c_designware_platform video i2c_designware_core acpi_pad acpi_als
> > kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2
> > fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp
> > [ 1010.605459] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel
> > libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal
> > [ 1010.605469] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W
> > 4.9.0-rc8+ #14
> > [ 1010.605471] Hardware name: /NUC5i7RYB, BIOS
> > RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
> > [ 1010.605484] Workqueue: usb_hub_wq hub_event [usbcore]
> > [ 1010.605486] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858
> > 0000000000000000
> > [ 1010.605490] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07
> > ffff8803b1f7f8f0
> > [ 1010.605492] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef
> > ffff8803b45c6840
> > [ 1010.605495] Call Trace:
> > [ 1010.605502] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77
> > [ 1010.605505] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0
> > [ 1010.605508] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0
> > [ 1010.605510] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0
> > [ 1010.605513] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0
> > [ 1010.605516] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60
> > [ 1010.605518] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90
> > [ 1010.605520] [<ffffffff846f6f26>] ?
> > sysfs_do_create_link_sd.isra.2+0xb6/0xd0
> > [ 1010.605524] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0
> > [ 1010.605527] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110
> > [ 1010.605529] [<ffffffff84ccff87>] ? device_add+0x777/0x1350
> > [ 1010.605532] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180
> > [ 1010.605542] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore]
> > [ 1010.605550] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore]
> > [ 1010.605554] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0
> > [ 1010.605563] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280
> > [usbcore]
> > [ 1010.605566] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80
> > [ 1010.605569] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770
> > [ 1010.605572] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390
> > [ 1010.605574] [<ffffffff84541783>] ? cache_reap+0x173/0x200
> > [ 1010.605577] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60
> > [ 1010.605579] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0
> > [ 1010.605581] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160
> > [ 1010.605584] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60
> > [ 1010.605586] [<ffffffff841a837c>] ? kthread+0x1cc/0x220
> > [ 1010.605589] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.605591] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.605594] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.605596] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30
> > [ 1010.605598] ---[ end trace 49b46eb633ff1199 ]---
> > [ 1010.605948] usb 1-3.3: can't device_add, error -17
> > [ 1010.686729] usb 1-3.3: new high-speed USB device number 11 using xhci_hcd
> > [ 1010.712761] usb 1-3.3: New USB device found, idVendor=2040,
> > idProduct=6513
> > [ 1010.712768] usb 1-3.3: New USB device strings: Mfr=0, Product=1,
> > SerialNumber=2
> > [ 1010.712772] usb 1-3.3: Product: WinTV HVR-980
> > [ 1010.712775] usb 1-3.3: SerialNumber: 4028449018
> > [ 1010.714339] ------------[ cut here ]------------
> > [ 1010.714347] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31
> > sysfs_warn_dup+0x7b/0x90
> > [ 1010.714349] sysfs: cannot create duplicate filename
> > '/bus/usb/devices/1-3.3'
> > [ 1010.714351] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa
> > tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops
> > videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media
> > xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
> > iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
> > xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge
> > stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter
> > ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative
> > cpufreq_userspace binfmt_misc parport_pc ppdev lp parport
> > snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support
> > snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm
> > intel_powerclamp coretemp kvm_intel mac80211 kvm i915
> > [ 1010.714409] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
> > iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul
> > glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper
> > cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel
> > snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me
> > i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich
> > shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress
> > snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi
> > mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match
> > i2c_designware_platform video i2c_designware_core acpi_pad acpi_als
> > kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2
> > fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp
> > [ 1010.714475] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel
> > libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal
> > [ 1010.714490] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W
> > 4.9.0-rc8+ #14
> > [ 1010.714493] Hardware name: /NUC5i7RYB, BIOS
> > RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
> > [ 1010.714513] Workqueue: usb_hub_wq hub_event [usbcore]
> > [ 1010.714517] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858
> > 0000000000000000
> > [ 1010.714522] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07
> > ffff8803b1f7f8f0
> > [ 1010.714527] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef
> > ffff8803b45c6840
> > [ 1010.714532] Call Trace:
> > [ 1010.714543] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77
> > [ 1010.714547] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0
> > [ 1010.714551] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0
> > [ 1010.714555] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0
> > [ 1010.714560] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0
> > [ 1010.714565] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60
> > [ 1010.714568] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90
> > [ 1010.714573] [<ffffffff846f6f26>] ?
> > sysfs_do_create_link_sd.isra.2+0xb6/0xd0
> > [ 1010.714579] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0
> > [ 1010.714583] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110
> > [ 1010.714587] [<ffffffff84ccff87>] ? device_add+0x777/0x1350
> > [ 1010.714592] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180
> > [ 1010.714608] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore]
> > [ 1010.714623] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore]
> > [ 1010.714628] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0
> > [ 1010.714643] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280
> > [usbcore]
> > [ 1010.714648] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80
> > [ 1010.714653] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770
> > [ 1010.714657] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390
> > [ 1010.714661] [<ffffffff84541783>] ? cache_reap+0x173/0x200
> > [ 1010.714666] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60
> > [ 1010.714670] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0
> > [ 1010.714674] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160
> > [ 1010.714678] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60
> > [ 1010.714682] [<ffffffff841a837c>] ? kthread+0x1cc/0x220
> > [ 1010.714686] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.714691] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.714695] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80
> > [ 1010.714699] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30
> > [ 1010.714719] ---[ end trace 49b46eb633ff119a ]---
> > [ 1010.715706] usb 1-3.3: can't device_add, error -17
> > [ 1010.716223] usb 1-3-port3: unable to enumerate USB device
> >
> >
> >
> > If so, it seems that the device was not properly unregistered. That's
> > weird, since everything sounded ok at device unregister:
> >
> > [ 999.740335] usb 1-3.3: em2882!3#0: USB disconnect, device number 7
> > [ 999.742857] usb 1-3.3: em2882!3#0: Disconnecting
> > [ 999.742874] usb 1-3.3: em2882!3#0: Closing video extension
> > [ 999.743058] usb 1-3.3: em2882!3#0: V4L2 device vbi0 deregistered
> > [ 999.744327] usb 1-3.3: em2882!3#0: V4L2 device video0 deregistered
> > [ 999.747938] tvp5150 6-005c: tvp5150.c: removing tvp5150 adapter on
> > address 0xb8
> > [ 999.750085] xc2028 6-0061: xc2028_dvb_release called
> > [ 999.750852] usb 1-3.3: em2882!3#0: Closing audio extension
> > [ 999.754253] usb 1-3.3: em2882!3#0: Closing DVB extension
> > [ 999.760360] xc2028 6-0061: xc2028_dvb_release called
> > [ 999.760362] xc2028 6-0061: free_firmware called
> > [ 999.760958] xc2028 6-0061: destroying instance
> >
> > I'll try to bisect this.
>
> According with git bisect, the culprit is this patch:
>
> ce8591ff023ef8e04750c2cc2882523619a80b58 is the first bad commit
> commit ce8591ff023ef8e04750c2cc2882523619a80b58
> Author: Mauro Carvalho Chehab <mche...@s-opensource.com>
> Date: Thu Oct 20 08:42:03 2016 -0200
>
> [media] em28xx: convert it from pr_foo() to dev_foo()
>
> Instead of using pr_foo(), use dev_foo(), with provides a
> better output. As this device is a multi-interface one,
> we'll set the device name to show the chipset and the driver
> used.
>
> While here, get rid of printk continuation messages.
>
> Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
>
> :040000 040000 834f13194c879d17f2b2ca79afbd1ed0999fbfeb
> 85ea8360d7adbf597ca1d6c5a8205b1a64666879 M drivers
>
> I'll do more tests and see what's wrong there.
I found the issue: driver's core doesn't like changing the device name,
as it breaks the unbind logic. The enclosed patch fixes it.
There's a drawback, though: it will now print log messages using the USB
address, instead of using "em28xx:":
[ 132.398622] usb 1-3.3: new high-speed USB device number 9 using xhci_hcd
[ 132.504308] usb 1-3.3: New USB device found, idVendor=2040, idProduct=6513
[ 132.504314] usb 1-3.3: New USB device strings: Mfr=0, Product=1,
SerialNumber=2
[ 132.504316] usb 1-3.3: Product: WinTV HVR-980
[ 132.504318] usb 1-3.3: SerialNumber: 4028449018
[ 132.507651] usb 1-3.3: New device WinTV HVR-980 @ 480 Mbps (2040:6513,
interface 0, class 0)
[ 132.507654] usb 1-3.3: Audio interface 0 found (Vendor Class)
[ 132.507657] usb 1-3.3: Video interface 0 found: isoc
[ 132.507658] usb 1-3.3: DVB interface 0 found: isoc
[ 132.507777] usb 1-3.3: chip ID is em2882/3
[ 132.708925] usb 1-3.3: EEPROM ID = 1a eb 67 95, EEPROM hash = 0x994b2bdd
[ 132.708928] usb 1-3.3: EEPROM info:
[ 132.708931] usb 1-3.3: AC97 audio (5 sample rates)
[ 132.708932] usb 1-3.3: 500mA max power
[ 132.708935] usb 1-3.3: Table at offset 0x24, strings=0x1e82, 0x186a,
0x0000
[ 132.708937] usb 1-3.3: Identified as Hauppauge WinTV HVR 950 (card=16)
[ 132.710934] usb 1-3.3: analog set to isoc mode.
[ 132.710936] usb 1-3.3: dvb set to isoc mode.
[ 132.711582] usb 1-3.3: Registering V4L2 extension
[ 132.858224] usb 1-3.3: Config register raw data: 0xd0
[ 132.859738] usb 1-3.3: AC97 vendor ID = 0xffffffff
[ 132.859918] usb 1-3.3: AC97 features = 0x6a90
[ 132.859920] usb 1-3.3: Empia 202 AC97 audio processor detected
[ 134.636310] usb 1-3.3: V4L2 video device registered as video0
[ 134.636319] usb 1-3.3: V4L2 VBI device registered as vbi0
[ 134.637132] usb 1-3.3: V4L2 extension successfully initialized
[ 134.637138] usb 1-3.3: Binding audio extension
[ 134.637142] usb 1-3.3: em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
[ 134.637147] usb 1-3.3: em28xx-audio.c: Copyright (C) 2007-2016 Mauro
Carvalho Chehab
[ 134.638521] usb 1-3.3: Endpoint 0x83 high-speed on intf 0 alt 7 interval =
8, size 196
[ 134.638529] usb 1-3.3: Number of URBs: 1, with 64 packets and 192 size
[ 134.643544] usb 1-3.3: Audio extension successfully initialized
[ 134.643552] usb 1-3.3: Binding DVB extension
[ 134.719239] usb 1-3.3: xc3028 attached
[ 134.719256] usb 1-3.3: DVB: registering adapter 0 frontend 0 (LG Electronics
LGDT3303 VSB/QAM Frontend)...
[ 134.724465] usb 1-3.3: DVB extension successfully initialized
Not sure how to address it.
Regards,
Mauro
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c
b/drivers/media/usb/em28xx/em28xx-cards.c
index b516c691b9eb..50e4c6e51ee7 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -3236,8 +3236,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct
usb_device *udev,
int minor)
{
int retval;
- static const char *default_chip_name = "em28xx";
- const char *chip_name = default_chip_name;
+ const char *chip_name = NULL;
dev->udev = udev;
mutex_init(&dev->ctrl_urb_lock);
@@ -3324,14 +3323,9 @@ static int em28xx_init_dev(struct em28xx *dev, struct
usb_device *udev,
break;
}
}
-
- dev_set_name(&dev->udev->dev, "%d-%s: %s#%d",
- dev->udev->bus->busnum, dev->udev->devpath,
- chip_name, dev->devno);
-
- if (chip_name == default_chip_name)
- dev_info(&dev->udev->dev,
- "unknown em28xx chip ID (%d)\n", dev->chip_id);
+ if (!chip_name)
+ dev_info(&dev->udev->dev,
+ "unknown em28xx chip ID (%d)\n", dev->chip_id);
else
dev_info(&dev->udev->dev, "chip ID is %s\n", chip_name);
Thanks,
Mauro
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