Re: [PATCH] Fix Hauppauge Nova-T 500 USB disconnects

Torgeir Veimo <torgeir@xxxxxxxxx> · Sat, 28 Jul 2007 12:22:42 +0100

On 27 Jul 2007, at 15:18, Soeren Moch wrote:

 Respect the patch, it works for me. I have not any disconnect in some
days, althought it is dificult to say that the problem is 100% solved,
because disconnects are random.

Some days ago I wrote a patch for the Nova-T-Stick (see thread
"dib0700 problems (nova-T usb stick)" ). As I could see there,
disconnects are not random, they can only occur directly after a
streamon firmware call. The dib0700 bridge seems to write unintentionally
to the usb bus (or at least driving current into D+/D- or switching
pull-up/down resistors on/off or doing similar strange things) after a
streamon firmware call, usually causing  protocol errors (not a real
problem, maybe only for running isochronous transfers to other devices
on the bus), but causing a usb disconnect when accidentally hitting a SOF
packet. So avoiding streamon firmware calls will decrease the disconnect
rate. This is the same idea as in your patches.

 Relying on device name seems somewhat hackish, however, and doesn't fix
anything for nova-t stick ;)

There are other form to do the same, more easily, for all the dibcom 

devices, 
 but there is a problem: streaming state don't go off when closing the 

device, 
 althought perphaps that is not important.
See the atached patch.

This new patch will not help for a Nova-T stick due to the "i2c gating
problem" I have seen there (see thread mentioned above). When simply
starting usb streaming and leaving it on all the time, you are not able
set new tuning parameters, which of course makes this stick useless.

The patch doesn't completely fix my usb disconnects. Do you think the kernel stack trace below indicates a i2c gating problem?

Jul 28 11:36:17 htpc2 vdr: [10480] switching to channel 5
Jul 28 11:36:17 htpc2 vdr: [14204] transfer thread ended (pid=10480, tid=14204)
Jul 28 11:36:17 htpc2 vdr: [10480] cTS2PES got 6 TS errors, 3 TS continuity errors
Jul 28 11:36:17 htpc2 vdr: [10480] cTS2PES got 0 TS errors, 3 TS continuity errors
Jul 28 11:36:17 htpc2 vdr: [10480] buffer stats: 193452 (9%) used
Jul 28 11:36:17 htpc2 vdr: [14214] transfer thread started (pid=10480, tid=14214)
Jul 28 11:36:17 htpc2 kernel: usb 6-1: USB disconnect, address 2
Jul 28 11:36:17 htpc2 kernel: mt2060 I2C write failed (len=2)
Jul 28 11:36:17 htpc2 kernel: MT2060: IF1: 1220MHz
Jul 28 11:36:17 htpc2 kernel: MT2060: PLL freq=562000kHz  f_lo1=1782000kHz  f_lo2=1183850kHz
Jul 28 11:36:17 htpc2 kernel: MT2060: PLL div1=111  num1=24  div2=73  num2=8115
Jul 28 11:36:17 htpc2 kernel: MT2060: PLL [1..5]: 56 6f  3 fb 93
Jul 28 11:36:17 htpc2 kernel: mt2060 I2C write failed (len=6)
Jul 28 11:36:17 htpc2 kernel: mt2060 I2C read failed
Jul 28 11:36:17 htpc2 last message repeated 9 times
Jul 28 11:36:17 htpc2 vdr: [14206] TS buffer on device 2 thread ended (pid=10480, tid=14206)
Jul 28 11:36:17 htpc2 vdr: [14205] buffer stats: 107536 (5%) used
Jul 28 11:36:17 htpc2 vdr: [14205] receiver on device 2 thread ended (pid=10480, tid=14205)
Jul 28 11:36:17 htpc2 vdr: [14219] receiver on device 2 thread started (pid=10480, tid=14219)
Jul 28 11:36:17 htpc2 vdr: [14220] TS buffer on device 2 thread started (pid=10480, tid=14220)
Jul 28 11:36:18 htpc2 kernel: mt2060 I2C write failed
Jul 28 11:36:18 htpc2 kernel: list_del corruption. prev->next should be c9fb8dbc, but was c152e1a0
Jul 28 11:36:18 htpc2 kernel: ------------[ cut here ]------------
Jul 28 11:36:18 htpc2 kernel: kernel BUG at lib/list_debug.c:67!
Jul 28 11:36:18 htpc2 kernel: invalid opcode: 0000 [#1]
Jul 28 11:36:18 htpc2 kernel: SMP 
Jul 28 11:36:18 htpc2 kernel: last sysfs file: /module/libata/version
Jul 28 11:36:18 htpc2 kernel: Modules linked in: autofs4 hidp rfcomm l2cap bluetooth sunrpc ipv6 nf_conntrack_netbios_ns nf_conntrack_ipv4 xt_state nf_connt
rack nfnetlink xt_tcpudp ipt_REJECT iptable_filter ip_tables x_tables ext2 dm_multipath video sbs button dock battery ac parport_pc lp parport loop snd_via8
2xx gameport snd_ac97_codec ac97_bus snd_seq_dummy cx22702 cx88_dvb cx88_vp3054_i2c video_buf_dvb snd_seq_oss snd_seq_midi_event mt2060 snd_seq snd_pcm_oss 
snd_mixer_oss dvb_usb_dib0700 dib7000m snd_pcm dib7000p cx8802 cx8800 dvb_usb stv0299 cx88xx dib3000mc snd_timer pegasus ir_common snd_page_alloc dibx000_co
mmon i2c_viapro i2c_algo_bit mii snd_mpu401_uart b2c2_flexcop_pci tveeprom b2c2_flexcop snd_rawmidi videodev via_ircc viafb(U) rtc_cmos compat_ioctl32 dvb_c
ore snd_seq_device serio_raw firewire_ohci v4l1_compat irda firewire_core v4l2_common snd dvb_pll video_buf i2c_core btcx_risc crc_itu_t crc_ccitt soundcore
 sr_mod cdrom sg dm_snapshot dm_zero dm_mirror dm_mod sata_via ata_generic pata_via libat
Jul 28 11:36:18 htpc2 kernel:  sd_mod scsi_mod ext3 jbd mbcache ehci_hcd ohci_hcd uhci_hcd
Jul 28 11:36:18 htpc2 kernel: CPU:    0
Jul 28 11:36:18 htpc2 kernel: EIP:    0060:[<c04ef31d>]    Not tainted VLI
Jul 28 11:36:18 htpc2 kernel: EFLAGS: 00210086   (2.6.22.1-27.fc7 #1)
Jul 28 11:36:18 htpc2 kernel: EIP is at list_del+0x21/0x5d
Jul 28 11:36:18 htpc2 kernel: eax: 00000048   ebx: c152e19c   ecx: 00200046   edx: 00200000
Jul 28 11:36:18 htpc2 kernel: esi: c152e194   edi: 00200282   ebp: d77a2600   esp: c9fb8d98
Jul 28 11:36:18 htpc2 kernel: ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
Jul 28 11:36:18 htpc2 kernel: Process vdr (pid: 10485, ti=c9fb8000 task=d77a2600 task.ti=c9fb8000)
Jul 28 11:36:18 htpc2 kernel: Stack: c06b1bb6 c9fb8dbc c152e1a0 c152e19c c060c7f8 00000000 00000001 d77a2600 
Jul 28 11:36:18 htpc2 kernel:        c042310d c152e1a0 c152e1a0 80286f4e ffffffed d4af8820 c1742800 c060c6bf 
Jul 28 11:36:18 htpc2 kernel:        c152e000 c9fb8000 dc9d2daf 00000001 c9fb8e3c c13896b8 00000000 c9fb8e90 
Jul 28 11:36:18 htpc2 kernel: Call Trace:
Jul 28 11:36:18 htpc2 kernel:  [<c060c7f8>] __down_interruptible+0xc6/0xf0
Jul 28 11:36:18 htpc2 kernel:  [<c042310d>] default_wake_function+0x0/0xc
Jul 28 11:36:18 htpc2 kernel:  [<c060c6bf>] __down_failed_interruptible+0x7/0xc
Jul 28 11:36:18 htpc2 kernel:  [<dc9d2daf>] dvb_frontend_ioctl+0xab/0x8d0 [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<c0440127>] unqueue_me+0x7f/0x87
Jul 28 11:36:18 htpc2 kernel:  [<c0440e7b>] futex_wait+0x23f/0x2c2
Jul 28 11:36:18 htpc2 kernel:  [<c046a6a4>] find_extend_vma+0x12/0x49
Jul 28 11:36:18 htpc2 kernel:  [<dc9cd15c>] dvb_generic_ioctl+0x0/0x3b [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<dc9cd105>] dvb_usercopy+0xa9/0x100 [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<c0420ada>] update_curr+0x23b/0x25c
Jul 28 11:36:18 htpc2 kernel:  [<c0420838>] update_stats_wait_end+0x84/0xad
Jul 28 11:36:18 htpc2 kernel:  [<dc9cd15c>] dvb_generic_ioctl+0x0/0x3b [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<dc9cd18e>] dvb_generic_ioctl+0x32/0x3b [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<dc9d2d04>] dvb_frontend_ioctl+0x0/0x8d0 [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<dc9cd15c>] dvb_generic_ioctl+0x0/0x3b [dvb_core]
Jul 28 11:36:18 htpc2 kernel:  [<c0484934>] do_ioctl+0x88/0xa0
Jul 28 11:36:18 htpc2 kernel:  [<c0453fd3>] audit_syscall_exit+0x2f2/0x30e
Jul 28 11:36:18 htpc2 kernel:  [<c0484b83>] vfs_ioctl+0x237/0x249
Jul 28 11:36:18 htpc2 kernel:  [<c0484be1>] sys_ioctl+0x4c/0x67
Jul 28 11:36:18 htpc2 kernel:  [<c0404f8e>] syscall_call+0x7/0xb
Jul 28 11:36:18 htpc2 kernel:  =======================
Jul 28 11:36:18 htpc2 kernel: Code: 63 00 00 00 89 c3 eb e8 90 90 53 83 ec 0c 8b 48 04 8b 11 39 c2 74 18 89 54 24 08 89 44 24 04 c7 04 24 b6 1b 6b c0 e8 96 
a2 f3 ff <0f> 0b eb fe 8b 10 8b 5a 04 39 c3 74 18 89 5c 24 08 89 44 24 04 
Jul 28 11:36:18 htpc2 kernel: EIP: [<c04ef31d>] list_del+0x21/0x5d SS:ESP 0068:c9fb8d98
Jul 28 11:36:18 htpc2 kernel: cx88_wakeup: 8 buffers handled (should be 1)
Jul 28 11:36:20 htpc2 kernel: dvb-usb: could not submit URB no. 0 - get them all back
Jul 28 11:36:20 htpc2 kernel: dvb-usb: error while enabling fifo.
Jul 28 11:36:20 htpc2 vdr: [10490] ERROR: can't set filter (pid=18, tid=4E, mask=FE): No such device
Jul 28 11:36:21 htpc2 vdr: [10489] frontend 3 lost lock on channel 15, tp 578
Jul 28 11:36:23 htpc2 vdr: [10489] frontend 3 regained lock on channel 15, tp 578
Jul 28 11:36:24 htpc2 vdr: [10489] frontend 3 lost lock on channel 15, tp 578
Jul 28 11:36:26 htpc2 vdr: [10489] frontend 3 timed out while tuning to channel 15, tp 578
Jul 28 11:36:26 htpc2 kernel: mt2060 I2C write failed (len=2)
Jul 28 11:36:26 htpc2 kernel: MT2060: IF1: 1220MHz
Jul 28 11:36:26 htpc2 kernel: MT2060: PLL freq=578166kHz  f_lo1=1798000kHz  f_lo2=1183700kHz
Jul 28 11:36:26 htpc2 kernel: MT2060: PLL div1=112  num1=24  div2=73  num2=8038
Jul 28 11:36:26 htpc2 kernel: MT2060: PLL [1..5]: 46 70  6 f6 93
Jul 28 11:36:26 htpc2 kernel: mt2060 I2C write failed (len=6)
Jul 28 11:36:26 htpc2 kernel: mt2060 I2C read failed
Jul 28 11:36:26 htpc2 last message repeated 9 times
Jul 28 11:36:32 htpc2 vdr: [10480] switching to channel 7
Jul 28 11:36:32 htpc2 vdr: [14214] transfer thread ended (pid=10480, tid=14214)
Jul 28 11:36:32 htpc2 kernel: dvb-usb: error while stopping stream.
Jul 28 11:36:32 htpc2 vdr: [10480] buffer stats: 0 (0%) used
Jul 28 11:36:32 htpc2 kernel: dvb-usb: could not submit URB no. 0 - get them all back
Jul 28 11:36:32 htpc2 kernel: dvb-usb: error while enabling fifo.
Jul 28 11:36:32 htpc2 vdr: [10480] ERROR (dvbdevice.c,667): No such device
Jul 28 11:36:32 htpc2 vdr: [10480] ERROR: can't set PID 540 on device 2
Jul 28 11:36:32 htpc2 vdr: [14264] transfer thread started (pid=10480, tid=14264)
Jul 28 11:36:32 htpc2 vdr: [14220] TS buffer on device 2 thread ended (pid=10480, tid=14220)
Jul 28 11:36:32 htpc2 vdr: [14219] buffer stats: 0 (0%) used
Jul 28 11:36:32 htpc2 vdr: [14219] receiver on device 2 thread ended (pid=10480, tid=14219)
Jul 28 11:36:35 htpc2 kernel: mt2060 I2C write failed (len=2)
Jul 28 11:36:35 htpc2 kernel: MT2060: IF1: 1220MHz
Jul 28 11:36:35 htpc2 kernel: MT2060: PLL freq=578166kHz  f_lo1=1798000kHz  f_lo2=1183700kHz
Jul 28 11:36:35 htpc2 kernel: MT2060: PLL div1=112  num1=24  div2=73  num2=8038
Jul 28 11:36:35 htpc2 kernel: MT2060: PLL [1..5]: 46 70  6 f6 93
Jul 28 11:36:35 htpc2 kernel: mt2060 I2C write failed (len=6)
Jul 28 11:36:35 htpc2 kernel: mt2060 I2C read failed
Jul 28 11:36:35 htpc2 last message repeated 9 times
Jul 28 11:36:39 htpc2 vdr: [10480] switching to channel 8
Jul 28 11:36:39 htpc2 vdr: [14264] transfer thread ended (pid=10480, tid=14264)

 -- 
Torgeir Veimo
torgeir@xxxxxxxxx

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