Re: PROBLEM: usb_8dev driver can't get CAN_ERR_FLAG

* Re: PROBLEM: usb_8dev driver can't get CAN_ERR_FLAG
       [not found] <3DBC6D34FF74DF48B9284D7A6A05A6750270AD384CA2@VB-SRVSBS.archimede.local>
@ 2015-02-13 19:07 ` Bernd Krumboeck
  2015-02-17 10:53   ` Manuele Conti
  0 siblings, 1 reply; 4+ messages in thread
From: Bernd Krumboeck @ 2015-02-13 19:07 UTC (permalink / raw)
  To: Manuele Conti; +Cc: linux-can

Dear Manuele!

Sorry, but I can't follow:
CAN_ERR_FLAG is set by alloc_can_err_skb function in can.c.
The driver uses this function when receiving an error (usb_8dev_rx_err_msg function) from device.

Please provide following informations for further investigations:
1. Firmware version
2. Schematic, connected devices, ...
3. Exact description under which circumstances this problem occurs

regards,
Bernd

Am 2015-02-13 um 17:36 schrieb Manuele Conti:
> [1.] usb_8dev doesn't set CAN_ERR_FLAG when a bus error occurs.
> [2.] It is not possible to get any error from an application because driver doesn't set CAN_ERR_FLAG when a canbus error occurs.
> [3.] modules, kernel, driver
> [4.] Linux version 3.11.0-26-generic (buildd@comet) (gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu8) ) #45-Ubuntu SMP Tue Jul 15 04:02:06 UTC 2014
> [7]
> [7.1]
> If some fields are empty or look unusual you may have an old version.
> Compare to the current minimal requirements in Documentation/Changes.
>
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=13.10
> DISTRIB_CODENAME=saucy
> DISTRIB_DESCRIPTION="Ubuntu 13.10"
> NAME="Ubuntu"
> VERSION="13.10, Saucy Salamander"
> ID=ubuntu
> ID_LIKE=debian
> PRETTY_NAME="Ubuntu 13.10"
> VERSION_ID="13.10"
> HOME_URL="http://www.ubuntu.com/"
> SUPPORT_URL="http://help.ubuntu.com/"
> BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
> Linux ThinkPad-Edge-E531 3.11.0-26-generic #45-Ubuntu SMP Tue Jul 15 04:02:06 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
>
> Gnu C                  gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
> Gnu make               3.81
> util-linux             linux 2.20.1
> mount                  linux 2.20.1 (with libblkid and selinux support)
> modutils               9
> e2fsprogs              1.42.8
> PPP                    2.4.5
> Linux C Library        > libc.2.17
> Dynamic linker (ldd)   2.17
> Procps                 3.3.3
> Net-tools              1.60
> iproute2              iproute2-ss130716
> Kbd                    1.15.5
> Sh-utils               8.20
> Modules Loaded         ftdi_sio usbserial michael_mic arc4 pci_stub vboxpci vboxnetadp vboxnetflt vboxdrv parport_pc ppdev rfcomm bnep binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache snd_hda_codec_hdmi snd_hda_codec_conexant joydev x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core btusb videodev bluetooth snd_hda_intel snd_hda_codec snd_hwdep lib80211_crypt_tkip microcode wl lib80211 psmouse cfg80211 i915 serio_raw snd_pcm rtsx_pci_ms memstick lpc_ich snd_page_alloc drm_kms_helper mei_me mei drm i2c_algo_bit thinkpad_acpi nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd wmi soundcore mac_hid video lp parport hid_generic usbhid hid rtsx_pci_sdmmc r8169 ahci rtsx_pci mii libahci
>
> free reports:
>               total       used       free     shared    buffers     cached
> Mem:       7738552    7424740     313812          0    1023148    3076448
> -/+ buffers/cache:    3325144    4413408
> Swap:      8388604          0    8388604
>
> /proc/cpuinfo
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 0
> cpu cores       : 4
> apicid          : 0
> initial apicid  : 0
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 1
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 0
> cpu cores       : 4
> apicid          : 1
> initial apicid  : 1
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 2
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 1
> cpu cores       : 4
> apicid          : 2
> initial apicid  : 2
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 3
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 1
> cpu cores       : 4
> apicid          : 3
> initial apicid  : 3
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 4
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 2
> cpu cores       : 4
> apicid          : 4
> initial apicid  : 4
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 5
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 2
> cpu cores       : 4
> apicid          : 5
> initial apicid  : 5
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 6
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 3
> cpu cores       : 4
> apicid          : 6
> initial apicid  : 6
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> processor       : 7
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 58
> model name      : Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
> stepping        : 9
> microcode       : 0x15
> cpu MHz         : 1200.000
> cache size      : 6144 KB
> physical id     : 0
> siblings        : 8
> core id         : 3
> cpu cores       : 4
> apicid          : 7
> initial apicid  : 7
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
> bogomips        : 4390.12
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 36 bits physical, 48 bits virtual
> power management:
>
> [7.2]
>
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