Hi,
Alan Stern wrote:
>
>
> You can start by turning on CONFIG_USB_DEBUG for your kernel and then
> posting a copy of the dmesg log showing what happens when one of those
> peculiar disconnects occurs. Post also a stack trace (Alt-SysRq-T); the
> khubd process is the one that matters most.
I had to comment
usb 4-2: link qh0-00ff/f7e2c180 start 0 [2/0 us]
usb 4-2: unlink qh0-00ff/f7e2c180 start 0 [2/0 us]
because it flooded my log.
When it fails I got :
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: fatal command
010039 (park)=0 ithresh=1 Async Periodic period=256 RUN
Oct 2 20:25:20 localhost kernel: ehci_hcd
0000:00:10.3: fatal status e008 Async Periodic Recl FLR
Oct 2 20:25:20 localhost
kernel: ehci_hcd 0000:00:10.3: fatal command 010039 (park)=0 ithresh=1
Async Periodic period=256 RUN Oct 2
20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: fatal status e008
Async Periodic Recl FLR
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3:
fatal command 010039 (park)=0 ithresh=1 Async Periodic period=256 RUN
Oct 2 20:25:20 localhost kernel:
ehci_hcd 0000:00:10.3: fatal status e008 Async Periodic Recl FLR
Oct 2 20:25:20 localhost kernel: hub 4-0:1.0: state 7 ports 6 chg 0000
evt 0004
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: GetStatus port
2 status 00180b POWER sig=j PEC CSC CONNECT
Oct 2 20:25:20 localhost kernel: hub 4-0:1.0: port 2, status 0501,
change 0003, 480 Mb/s
Oct 2 20:25:20 localhost kernel: usb 4-2: USB disconnect, address 2
Oct 2 20:25:20 localhost kernel: usb 4-2: usb_disable_device nuking all
URBs
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: shutdown urb
f7b6f7ac pipe c0010280 ep2in-bulk
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: shutdown urb
f7b6f720 pipe c0010280 ep2in-bulk
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: shutdown urb
f7b6f694 pipe c0010280 ep2in-bulk
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: shutdown urb
f7b6f8c4 pipe c0010280 ep2in-bulk
Oct 2 20:25:20 localhost kernel: ehci_hcd 0000:00:10.3: shutdown urb
f7b6f838 pipe c0010280 ep2in-bulk
Oct 2 20:25:20 localhost kernel: zd1211rw 4-2:1.0: zd_chip_control_leds
error -19
Oct 2 20:25:51 localhost last message repeated 31 times
Oct 2 20:26:37 localhost last message repeated 46 times
The stack trace is :
Oct 2 20:28:47 localhost kernel: khubd D 0000000A 0 93
6 95 10 (L-TLB)
Oct 2 20:28:47 localhost kernel: c39e5e9c 00000046 00000001
0000000a c39acab0 3dd3db96 000004f9 000001e8
Oct 2 20:28:47 localhost kernel: c39acbc0 c39e5ea4 00000000
0c16cbbf 00000000 0013827e 0013827e f75242ec
Oct 2 20:28:47 localhost kernel: f7ba3200 c028960b c0357f18
c0357f18 0013827e c011e077 c39acab0 c0357b20
Oct 2 20:28:47 localhost kernel: Call Trace:
Oct 2 20:28:47 localhost kernel: [<c028960b>] schedule_timeout+0x7a/0x95
Oct 2 20:28:47 localhost kernel: [<c011e077>] process_timeout+0x0/0x5
Oct 2 20:28:47 localhost kernel: [<f887b5fe>]
ehci_endpoint_disable+0xae/0x15e [ehci_hcd]
Oct 2 20:28:47 localhost kernel: [<c0220b6a>]
hcd_endpoint_disable+0x1b5/0x1bd
Oct 2 20:28:47 localhost kernel: [<c02219f2>]
usb_disable_endpoint+0x4e/0x4f
Oct 2 20:28:47 localhost kernel: [<c0221b23>]
usb_disable_device+0x62/0x12d
Oct 2 20:28:47 localhost kernel: [<c021d9f7>] usb_disconnect+0x85/0x109
Oct 2 20:28:47 localhost kernel: [<c021e94a>] hub_thread+0x556/0xd3d
Oct 2 20:28:47 localhost kernel: [<c011351e>] try_to_wake_up+0xed/0x10b
Oct 2 20:28:47 localhost kernel: [<c0288d15>] schedule+0x537/0x551
Oct 2 20:28:47 localhost kernel: [<c0126ae9>]
autoremove_wake_function+0x0/0x2d
Oct 2 20:28:47 localhost kernel: [<c021e3f4>] hub_thread+0x0/0xd3d
Oct 2 20:28:47 localhost kernel: [<c0126a35>] kthread+0xad/0xd8
Oct 2 20:28:47 localhost kernel: [<c0126988>] kthread+0x0/0xd8
Oct 2 20:28:47 localhost kernel: [<c0101005>] kernel_thread_helper+0x5/0xb
Matthieu
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