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Subject[2.4.21] USB very strange problems!
Date
Hi, (sorry if my English is a little bad :-)

I'm using Video4Linux + USB support + USB STV680 (Pencam) Camera support to get
my web-cam "Oregon Scientific DS-3868" work and I have some troubles and an "Oops"!

INFO ON MY SYSTEM:
- kernel 2.4.21

HARDWARE: (lspci)
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 02)
Subsystem: Asustek Computer, Inc. A7V Mainboard
Flags: bus master, medium devsel, latency 8
Memory at e6000000 (32-bit, prefetchable) [size=32M]
Capabilities: [a0] AGP version 2.0
Capabilities: [c0] Power Management version 2

00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: e0000000-e3dfffff
Prefetchable memory behind bridge: e3f00000-e5ffffff
Capabilities: [80] Power Management version 2

00:04.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22)
Subsystem: Asustek Computer, Inc. A7V Mainboard
Flags: bus master, stepping, medium devsel, latency 0

00:04.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE (rev 10) (prog-if 8a [Master SecP PriP])
Flags: bus master, medium devsel, latency 32
I/O ports at b800 [size=16]
Capabilities: [c0] Power Management version 2

00:04.2 USB Controller: VIA Technologies, Inc. USB (rev 10) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at b400 [size=32]
Capabilities: [80] Power Management version 2

00:04.3 USB Controller: VIA Technologies, Inc. USB (rev 10) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at b000 [size=32]
Capabilities: [80] Power Management version 2

00:04.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30)
Subsystem: Asustek Computer, Inc. A7V Mainboard
Flags: medium devsel, IRQ 9
Capabilities: [68] Power Management version 2

00:0b.0 Multimedia audio controller: Fortemedia, Inc Xwave QS3000A [FM801] (rev b2)
Subsystem: Fortemedia, Inc: Unknown device 1319
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at 9400 [size=128]
Capabilities: [dc] Power Management version 1

00:0b.1 Input device controller: Fortemedia, Inc Xwave QS3000A [FM801 game port] (rev b2)
Subsystem: Fortemedia, Inc: Unknown device 1319
Flags: bus master, medium devsel, latency 32
I/O ports at 9000 [size=16]
Capabilities: [dc] Power Management version 1

00:0d.0 Network controller: Cologne Chip Designs GmbH ISDN network controller [HFC-PCI] (rev 02)
Subsystem: Cologne Chip Designs GmbH ISDN Board
Flags: bus master, medium devsel, latency 16, IRQ 5
I/O ports at 8800 [disabled] [size=8]
Memory at df800000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 1

00:11.0 Unknown mass storage controller: Promise Technology, Inc. 20265 (rev 02)
Subsystem: Promise Technology, Inc. Ultra100
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at 8400 [size=8]
I/O ports at 8000 [size=4]
I/O ports at 7800 [size=8]
I/O ports at 7400 [size=4]
I/O ports at 7000 [size=64]
Memory at df000000 (32-bit, non-prefetchable) [size=128K]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [58] Power Management version 1

01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo Banshee (rev 03) (prog-if 00 [VGA])
Subsystem: Creative Labs 3D Blaster Banshee VE
Flags: 66Mhz, fast devsel, IRQ 11
Memory at e0000000 (32-bit, non-prefetchable) [size=32M]
Memory at e4000000 (32-bit, prefetchable) [size=32M]
I/O ports at d800 [size=256]
Expansion ROM at e3ff0000 [disabled] [size=64K]
Capabilities: [54] AGP version 1.0
Capabilities: [60] Power Management version 1


KERNEL CONFIG (only the most relevant things):

#
# Multimedia devices
#
CONFIG_VIDEO_DEV=y

#
# Video For Linux
#
CONFIG_VIDEO_PROC_FS=y

#
# USB support
#
CONFIG_USB=y
CONFIG_USB_DEBUG=y
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_BANDWIDTH is not set
# CONFIG_USB_EHCI_HCD is not set
CONFIG_USB_UHCI=m
CONFIG_USB_UHCI_ALT=m
# CONFIG_USB_OHCI is not set
...
CONFIG_USB_STV680=m
...


FOR MY TEST I USE "camorama" and "SANE"

1) Both with "UHCI" and "UHCI ALternate" drivers I have some troubles:

after using camorama OR SANE for few minutes the driver stop working,
in the case of "UHCI" I get messages like these:

Aug 12 15:47:18 pablohost kernel: 176: [c009a120] link (0009a150) e3 Length=3f MaxLen=3f DT0 EndPt=2 Dev=2, PID=69(IN) (buf=00242c00)
Aug 12 15:47:18 pablohost kernel: 177: [c009a150] link (0009a180) e3 Length=3f MaxLen=3f DT1 EndPt=2 Dev=2, PID=69(IN) (buf=00242c40)
...
Aug 12 15:47:18 pablohost kernel: 320: [c009bc30] link (0009bc60) e3 Length=3f MaxLen=3f DT0 EndPt=2 Dev=2, PID=69(IN) (buf=00245000)
Aug 12 15:47:18 pablohost kernel: 321: 322: 323: 324: 325: 326: 327: 328: 329: 330: 331: 332: 333: 334: 335: 336: 337: 338: 339: 340: 341: 342: 343: 344: 345: 346: 347: 348: 349: 350: 351: 352: 353: 354: 355: 356: 357: 358: 359: 360: 361: 362: 363: 364: 365: 366: 367: 368: 369: 370: 371: 372: 373: 374: 375: 376: 377: 378: 379: 380: 381: 382: 383: 384: 385: 386: 387: 388: 389: 390: 391: 392: 393: 394: 395: 396: 397: 398: 399: 400: 401: 402: 403: 404: 405: 406: 407: 408: 409: 410: 411: 412: 413: 414: 415: 416: 417: 418: 419: 420: 421: 422: 423: 424: 425: 426: 427: 428: 429: 430: 431: 432: 433: 434: 435: 436: 437: 438: 439: 440: 441: 442: 443: 444: 445: 446: 447: 448: 449: 450: 451: 452: 453: 454: 455: 456: 457: 458: 459: 460: 461: 462:
Aug 12 15:47:18 pablohost kernel: uhci.c: b400: host controller halted. very bad
Aug 12 15:48:25 pablohost kernel: usb_control/bulk_msg: timeout

"host controller halted. very bad":
if ((status & USBSTS_HCH) && !uhci->is_suspended) {
err("%x: host controller halted. very bad", io_addr);
/* FIXME: Reset the controller, fix the offending TD */
}
YES someone must FIX you!
But I don't understand why this happen...

2) The Oops seems to happen only with "UHCI" driver in this way:

Now that the host controller is halted, as I'm very wicked, I had tried to
unplug my web-cam and then to replug it, in this way the Oops turns out:
(NOTE: I had copied it by hand and here I report only the things that don't change,
so there aren't registers and stack...)

ksymoops 2.4.9 on i686 2.4.21min. Options used
-v /usr/src/minimal/vmlinux (specified)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.21min/ (default)
-m /boot/System.map-2.4.21min (specified)

c8913113
Oops: 0002
CPU: 0
EIP: 0010 : [<c8913113>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010097
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c023f000)
Call Trace: [<c89131cc>] [<c0108845>] [<c01089c4>] [<c0105360>] [<c010af58>]
[<c0105360>] [<c0105383>] [<c01053f2>] [<c0105000>]
Code: c7 46 20 98 ff ff ff 8b 43 10 8b 1b 8b 80 c8 00 00 00 8b 40


>>EIP; c8913113 <[uhci]uhci_remove_pending_qhs+43/90> <=====

Trace; c89131cc <[uhci]uhci_interrupt+6c/100>
Trace; c0108845 <handle_IRQ_event+45/70>
Trace; c01089c4 <do_IRQ+64/a0>
Trace; c0105360 <default_idle+0/30>
Trace; c010af58 <call_do_IRQ+5/d>
Trace; c0105360 <default_idle+0/30>
Trace; c0105383 <default_idle+23/30>
Trace; c01053f2 <cpu_idle+42/60>
Trace; c0105000 <_stext+0/0>

Code; c8913113 <[uhci]uhci_remove_pending_qhs+43/90>
00000000 <_EIP>:
Code; c8913113 <[uhci]uhci_remove_pending_qhs+43/90> <=====
0: c7 46 20 98 ff ff ff movl $0xffffff98,0x20(%esi) <=====
Code; c891311a <[uhci]uhci_remove_pending_qhs+4a/90>
7: 8b 43 10 mov 0x10(%ebx),%eax
Code; c891311d <[uhci]uhci_remove_pending_qhs+4d/90>
a: 8b 1b mov (%ebx),%ebx
Code; c891311f <[uhci]uhci_remove_pending_qhs+4f/90>
c: 8b 80 c8 00 00 00 mov 0xc8(%eax),%eax
Code; c8913125 <[uhci]uhci_remove_pending_qhs+55/90>
12: 8b 40 00 mov 0x0(%eax),%eax

<0>Kernel panic: Aiee, killing interrupt handler!


Had I forgotten something?

NOTE: this problem happens also on 2.4.22-rc2.

Bye,
Paolo

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