This is new in the last month or so, haven't tried this combination in a while...
I have a usbaudio device which fails under xine at times. With latests kernel 2.6 bk tree, I notice that after xine locks up, and I kill -9 it, that powering down the usb audio device causes:
See the comment immediately before that "badness" line:
case ED_UNLINK: /* wait for hw to finish? */
/* major IRQ delivery trouble loses INTR_SF too... */
WARN_ON (limit-- == 0);
spin_unlock_irqrestore (&ohci->lock, flags);
set_current_state (TASK_UNINTERRUPTIBLE);
schedule_timeout (1);
goto rescan;So after waiting 1000 (the initial value of "limit") HZ it reports this transition is way overdue ... suggesting IRQ delivery trouble.
Is OHCI getting any interrupts at all during this period? Even one IRQ should kick in finish_unlinks(), which should make that ED transition from the UNLINK state (hardware may still see it) to IDLE (it doesn't). What does sysfs say about ohci registers and schedules when this is happening?
- Dave
Sep 28 11:41:09 sea kernel: ohci-hcd 0000:00:07.4: GetStatus
roothub.portstatus [2] = 0x00030100 PESC CSC PPS
Sep 28 11:41:09 sea kernel: hub 1-0:1.0: port 2, status 100, change 3,
12 Mb/s
Sep 28 11:41:09 sea kernel: usb 1-2: USB disconnect, address 2
Sep 28 11:41:09 sea kernel: usb 1-2: usb_disable_device nuking all URBs
Sep 28 11:41:09 sea kernel: ohci-hcd 0000:00:07.4: shutdown urb df1e6a80
pipe 00
010200 ep2out-iso
Sep 28 11:41:10 sea kernel: Badness in ohci_endpoint_disable at
drivers/usb/host
/ohci-hcd.c:342
Sep 28 11:41:10 sea kernel: Call Trace:
Sep 28 11:41:10 sea kernel: [<c03123fd>]
ohci_endpoint_disable+0x14d/0x250
Sep 28 11:41:10 sea kernel: [<c01267ed>] printk+0x1bd/0x2b0
Sep 28 11:41:10 sea kernel: [<c02fdb1f>]
hcd_endpoint_disable+0x22f/0x3b0
Sep 28 11:41:10 sea kernel: [<c02ff4b8>] usb_disable_endpoint+0x58/0x80
Sep 28 11:41:10 sea kernel: [<c02ff63f>] usb_disable_device+0x10f/0x130
Sep 28 11:41:10 sea kernel: [<c02f7e34>] usb_disconnect+0xd4/0x160
Sep 28 11:41:10 sea kernel: [<c02faf11>]
hub_port_connect_change+0x2a1/0x3b0
Sep 28 11:41:10 sea kernel: [<c02fb41b>] hub_events+0x3fb/0x560
Sep 28 11:41:10 sea kernel: [<c02fb5c5>] hub_thread+0x45/0x100
Sep 28 11:41:10 sea kernel: [<c010b736>] ret_from_fork+0x6/0x14
Sep 28 11:41:10 sea kernel: [<c0120410>] default_wake_function+0x0/0x30
Sep 28 11:41:10 sea kernel: [<c02fb580>] hub_thread+0x0/0x100
Sep 28 11:41:10 sea kernel: [<c010910d>] kernel_thread_helper+0x5/0x18
Sep 28 11:41:10 sea kernel:
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