cx231xx kernel oops

I am experiencing a kernel oops when trying to use a Hauppage USB Live 2 frame grabber. The oops is below.

The system is a SOC 260Mhz Broadcom BCM47XX access point running OpenWRT.

root@anchor:/# uname -a
Linux anchor 3.0.3 #13 Sun Dec 4 08:04:41 PST 2011 mips GNU/Linux

The OOPS could be due to the limited hardware or something else. I'd appreciate any suggestions for making this work. I was hoping with hardware compression I could make it work on this platform. I am currently using a Hauppage USB Live (saa7115 based) with no problems but with limited resolution.

cx231xx v4l2 driver loaded.
cx231xx #0: New device Hauppauge Hauppauge Device @ 480 Mbps (2040:c200) with 5 interfaces cx231xx #0: registering interface 1
cx231xx #0: can't change interface 3 alt no. to 3: Max. Pkt size = 0
cx231xx #0: can't change interface 4 alt no. to 1: Max. Pkt size = 0
cx231xx #0: Identified as Hauppauge USB Live 2 (card=9)
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: Changing the i2c master port to 3
cx231xx #0: cx25840 subdev registration failure
cx231xx #0: cx231xx #0: v4l2 driver version 0.0.1
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: video_mux : 0
cx231xx #0: do_mode_ctrl_overrides : 0xb000
cx231xx #0: do_mode_ctrl_overrides NTSC
cx231xx #0: cx231xx #0/0: registered device video0 [v4l2]
cx231xx #0: cx231xx #0/0: registered device vbi0
cx231xx #0: V4L2 device registered as video0 and vbi0
cx231xx #0: EndPoint Addr 0x84, Alternate settings: 5
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 184
cx231xx #0: Alternate setting 2, max size= 728
cx231xx #0: Alternate setting 3, max size= 2892
cx231xx #0: Alternate setting 4, max size= 1800
cx231xx #0: EndPoint Addr 0x85, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 512
cx231xx #0: EndPoint Addr 0x86, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 576
usbcore: registered new interface driver cx231xx
wlan0: deauthenticating from ea:c7:b6:67:bd:1e by local choice (reason=3)
b43-phy0: Loading firmware version 508.1084 (2009-01-14 01:32:01)
wlan0: authenticate with ea:c7:b6:67:bd:1e (try 1)
wlan0: authenticated
wlan0: associate with ea:c7:b6:67:bd:1e (try 1)
wlan0: RX AssocResp from ea:c7:b6:67:bd:1e (capab=0x411 status=0 aid=3)
wlan0: associated
hrtimer: interrupt took 33795302 ns
cx231xx #0: setPowerMode::mode = 48, No Change req.
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: video_mux : 0
cx231xx #0: do_mode_ctrl_overrides : 0xb000
cx231xx #0: do_mode_ctrl_overrides NTSC
cx231xx #0: cx231xx_stop_stream():: ep_mask = 8
cx231xx #0: cx231xx_initialize_stream_xfer: set video registers
cx231xx #0: cx231xx_start_stream():: ep_mask = 8
ehci_hcd 0000:00:02.2: fatal error
ehci_hcd 0000:00:02.2: HC died; cleaning up
ehci_hcd 0000:00:02.2: force halt; handshake c0350024 00004000 00004000 -> -145
ehci_hcd 0000:00:02.2: HC died; cleaning up
usb 1-1: USB disconnect, device number 3
usb 1-1.3: USB disconnect, device number 4
pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
pl2303 1-1.3:1.0: device disconnected
usb 1-2: USB disconnect, device number 2
usb 2-1: new full speed USB device number 2 using ohci_hcd
usb 2-1: not running at top speed; connect to a high speed hub
hub 2-1:1.0: USB hub found
hub 2-1:1.0: 4 ports detected
usb 3-1: new full speed USB device number 2 using ohci_hcd
usb 3-1: not running at top speed; connect to a high speed hub
cx231xx #1: New device Hauppauge Hauppauge Device @ 12 Mbps (2040:c200) with 3 interfaces cx231xx #1: registering interface 1
cx231xx #1: can't change interface 3 alt no. to 3: Max. Pkt size = 0
usb 3-1: selecting invalid altsetting 3
cx231xx #1: can't change interface 3 alt no. to 3 (err=-22)
cx231xx #1: can't change interface 4 alt no. to 1: Max. Pkt size = 0
cx231xx #1: can't change interface 4 alt no. to 1 (err=-22)
cx231xx #1: Identified as Hauppauge USB Live 2 (card=9)
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: can't change interface 5 alt no. to 0 (err=-22)
cx231xx #1: Changing the i2c master port to 3
cx231xx #1: cx25840 subdev registration failure
cx231xx #1: cx231xx #1: v4l2 driver version 0.0.1
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: video_mux : 0
cx231xx #1: do_mode_ctrl_overrides : 0xb000
cx231xx #1: do_mode_ctrl_overrides NTSC
cx231xx #1: cx231xx #1/0: registered device video1 [v4l2]
cx231xx #1: cx231xx #1/0: registered device vbi1
cx231xx #1: V4L2 device registered as video1 and vbi1
cx231xx #1: EndPoint Addr 0x84, Alternate settings: 2
cx231xx #1: Alternate setting 0, max size= 64
cx231xx #1: Alternate setting 1, max size= 728
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 80f64e5c, ra == 80f64e30 Oops[#1]:
Cpu 0

$ 0   : 00000000 1000fc00 81b97660 81b97600
$ 4   : 80f7ad58 00004bf8 ffffffff 00000000
$ 8   : 0000000a 00000001 00000001 0000000d
$12   : 000000ff ffffffe0 8103ef20 00000000
$16   : 80fdc000 80c57000 80f80000 00000000
$20   : 00000002 00000000 80fdc0f8 00000001
$24   : 00000002 801539e0                  $28   : 80c06000 80c07a88 80f80000 80f64e30
Hi    : 00000000
Lo    : 00000000
epc   : 80f64e5c 0x80f64e5c
   Not tainted
ra    : 80f64e30 0x80f64e30
Status: 1000fc03    KERNEL EXL IE Cause : 00800008
BadVA : 00000000
PrId  : 00029006 (Broadcom BMIPS3300)
Modules linked in: cx231xx cx2341x rc_core videobuf_vmalloc videobuf_core saa7115 usbvision pl2303 v4l2_common videodev usb_storage usbserial i2c_dev i2c_core ohci_hcd nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd sd_mod ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables tun vfat fat ext4 jbd2 mbcache b43legacy b43 nls_iso8859_1 nls_cp437 mac80211 usbcore scsi_mod nls_base crc16 cfg80211 compat input_core arc4 aes_generic crypto_algapi switch_robo switch_core diag
Process khubd (pid: 598, threadinfo=80c06000, task=81a585b8, tls=00000000)
Stack : 81a585e8 80fdc000 00000001 000002d8 00002040 0000c200 00000003 8011fa58
       70756148 67756170 61482065 61707075 20656775 69766544 00206563 00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
       ...
Call Trace:[<8011fa58>] 0x8011fa58
[<80c6cd9c>] 0x80c6cd9c
[<8015db94>] 0x8015db94
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c69d54>] 0x80c69d54
[<80c6bf80>] 0x80c6bf80
[<800e15a8>] 0x800e15a8
[<80c72e58>] 0x80c72e58
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c63f2c>] 0x80c63f2c
[<80c64d1c>] 0x80c64d1c
[<80038150>] 0x80038150
[<80c63f90>] 0x80c63f90
[<80037a0c>] 0x80037a0c
[<800070f0>] 0x800070f0
[<8003798c>] 0x8003798c
[<800070e0>] 0x800070e0

Code: 00021080  00621021  8c550000 <8ea20000> 02002821  8c42000c  0000a021  90460002  a6060c18 Disabling lock debugging due to kernel taint

cx231xx #0: cx231xx_stop_stream():: ep_mask = 8 cx231xx #0: can't change interface 3 alt no. to 0 (err=-22)

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The cx231xx driver requires the cx25840 module. I'll wager you didn't install it on your router.

Regards,
Andy

Right in one. I did not because it didn't seem to be required - no missing symbols or error messages. Would a warning to syslog be possible?

With 8MB of flash, I remove everything that is not required.

--Yan

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

I made sure the module was loaded; same thing. :-(

Module                  Size  Used by    Tainted: G cx231xx               124608  0
cx2341x                13552  1 cx231xx
cx25840                35568  2
rc_core                12640  1 cx231xx
videobuf_vmalloc        3168  1 cx231xx
videobuf_core          12384  2 cx231xx,videobuf_vmalloc

I was not able to catch the first bit.

cx231xx #1: can't change interface 4 alt no. to 1: Max. Pkt size = 0
cx231xx #1: can't change interface 4 alt no. to 1 (err=-22)
cx231xx #1: Identified as Hauppauge USB Live 2 (card=9)
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: can't change interface 5 alt no. to 0 (err=-22)
cx231xx #1: Changing the i2c master port to 3
cx25840 3-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #1)
cx25840 3-0044: Firmware download size changed to 16 bytes max length
cx25840 3-0044: unable to open firmware v4l-cx231xx-avcore-01.fw
cx231xx #1: cx231xx #1: v4l2 driver version 0.0.1
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: video_mux : 0
cx231xx #1: do_mode_ctrl_overrides : 0xb000
cx231xx #1: do_mode_ctrl_overrides NTSC
cx231xx #1: cx231xx #1/0: registered device video1 [v4l2]
cx231xx #1: cx231xx #1/0: registered device vbi1
cx231xx #1: V4L2 device registered as video1 and vbi1
cx231xx #1: EndPoint Addr 0x84, Alternate settings: 2
cx231xx #1: Alternate setting 0, max size= 64
cx231xx #1: Alternate setting 1, max size= 728
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 80f84e5c, ra == 80f84e30 Oops[#1]:
Cpu 0

$ 0   : 00000000 1000fc00 80e2f860 80e2f800
$ 4   : 80f9ad58 00005095 ffffffff 00000000
$ 8   : 0000000a 00000001 00000001 0000000d
$12   : 000000ff ffffffe0 8103f760 00000000
$16   : 81e30000 80c9f800 80fa0000 00000000
$20   : 00000002 00000000 81e300f8 00000001
$24   : 00000002 801539e0                 $28   : 80c74000 80c75a88 80fa0000 80f84e30
Hi    : 00000000
Lo    : 00000000
epc   : 80f84e5c 0x80f84e5c
   Not tainted
ra    : 80f84e30 0x80f84e30
Status: 1000fc03    KERNEL EXL IE
Cause : 00800008
BadVA : 00000000
PrId  : 00029006 (Broadcom BMIPS3300)
Modules linked in: cx231xx cx2341x cx25840 rc_core videobuf_vmalloc videobuf_core saa7115 usbvision pl2303 v4l2_common videodev usb_storage usbserial i2c_dev i2c_core ohci_hcd nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd sd_mod ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables tun vfat fat ext4 jbd2 mbcache b43legacy b43 nls_iso8859_1 nls_cp437 mac80211 usbcore scsi_mod nls_base crc16 cfg80211 compat input_core arc4 aes_generic crypto_algapi switch_robo switch_core diag
Process khubd (pid: 596, threadinfo=80c74000, task=81a2d1a8, tls=00000000)
Stack : 802c4084 81e30000 00000001 000002d8 00002040 0000c200 00000003 8011fa58
       70756148 67756170 61482065 61707075 20656775 69766544 00206563 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       ...
Call Trace:[<8011fa58>] 0x8011fa58
[<80c8cd9c>] 0x80c8cd9c
[<8015db94>] 0x8015db94
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c89d54>] 0x80c89d54
[<80c8bf80>] 0x80c8bf80
[<800e15a8>] 0x800e15a8
[<80c92e58>] 0x80c92e58
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c83f2c>] 0x80c83f2c
[<80c84d1c>] 0x80c84d1c
[<80038150>] 0x80038150
[<80c83f90>] 0x80c83f90
[<80037a0c>] 0x80037a0c
[<800070f0>] 0x800070f0
[<8003798c>] 0x8003798c
[<800070e0>] 0x800070e0

Code: 00021080  00621021  8c550000 <8ea20000> 02002821  8c42000c  0000a021  90460002  a6060c18

Disabling lock debugging due to kernel taint cx231xx #0: cx231xx_stop_stream():: ep_mask = 8 cx231xx #0: can't change interface 3 alt no. to 0 (err=-22)

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

????

Maybe I need that, eh? :-)

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

I'm still seeing a kernel oops on use.

Module                  Size  Used by    Not tainted
cx231xx               124608  0             cx2341x                13552  1 cx231xx
cx25840                35568  1
rc_core                12640  1 cx231xx
videobuf_vmalloc        3168  1 cx231xx
videobuf_core          12384  2 cx231xx,videobuf_vmalloc

When the modules are loaded:

cx231xx v4l2 driver loaded.
cx231xx #0: New device Hauppauge Hauppauge Device @ 480 Mbps (2040:c200) with 5 interfaces cx231xx #0: registering interface 1
cx231xx #0: can't change interface 3 alt no. to 3: Max. Pkt size = 0 cx231xx #0: can't change interface 4 alt no. to 1: Max. Pkt size = 0 cx231xx #0: Identified as Hauppauge USB Live 2 (card=9)
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: Changing the i2c master port to 3
cx25840 0-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0)
cx25840 0-0044: Firmware download size changed to 16 bytes max length cx25840 0-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes) cx231xx #0: cx231xx #0: v4l2 driver version 0.0.1
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: video_mux : 0
cx231xx #0: do_mode_ctrl_overrides : 0xb000
cx231xx #0: do_mode_ctrl_overrides NTSC
cx231xx #0: cx231xx #0/0: registered device video0 [v4l2]
cx231xx #0: cx231xx #0/0: registered device vbi0
cx231xx #0: V4L2 device registered as video0 and vbi0
cx231xx #0: EndPoint Addr 0x84, Alternate settings: 5
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 184
cx231xx #0: Alternate setting 2, max size= 728
cx231xx #0: Alternate setting 3, max size= 2892
cx231xx #0: Alternate setting 4, max size= 1800
cx231xx #0: EndPoint Addr 0x85, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 512
cx231xx #0: EndPoint Addr 0x86, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 576

And when I try to use it:

root@anchor:/# fswebcam -c /etc/fswebcam
--- Opening /dev/video0...
Trying source module v4l2...
/dev/video0 opened.
Adjusting resolution from 768x576 to 720x480.
Delaying 1 seconds.
--- Capturing frame...
Skipping frame...
Timed out waiting for frame!
Capturing 1 frames...
Timed out waiting for frame!
No frames captured.

dmesg shows:

cx231xx #0: setPowerMode::mode = 48, No Change req.
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: video_mux : 0
cx231xx #0: do_mode_ctrl_overrides : 0xb000
cx231xx #0: do_mode_ctrl_overrides NTSC
cx231xx #0: cx231xx_stop_stream():: ep_mask = 8
cx231xx #0: cx231xx_initialize_stream_xfer: set video registers
cx231xx #0: cx231xx_start_stream():: ep_mask = 8
ehci_hcd 0000:00:02.2: fatal error
ehci_hcd 0000:00:02.2: HC died; cleaning up
ehci_hcd 0000:00:02.2: force halt; handshake c0350024 00004000 00004000 -> -145
ehci_hcd 0000:00:02.2: HC died; cleaning up
usb 1-1: USB disconnect, device number 3
usb 1-1.1: USB disconnect, device number 4
cx231xx #0: UsbInterface::sendCommand, failed with status --19
cx231xx #0: UsbInterface::sendCommand, failed with status --19
usb 1-1.2: USB disconnect, device number 5
pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
pl2303 1-1.2:1.0: device disconnected
usb 1-2: USB disconnect, device number 2
usb 2-1: new full speed USB device number 2 using ohci_hcd
usb 2-1: not running at top speed; connect to a high speed hub
hub 2-1:1.0: USB hub found
hub 2-1:1.0: 4 ports detected
usb 3-1: new full speed USB device number 2 using ohci_hcd
usb 3-1: not running at top speed; connect to a high speed hub
cx231xx #1: New device Hauppauge Hauppauge Device @ 12 Mbps (2040:c200) with 3 interfaces cx231xx #1: registering interface 1
cx231xx #1: can't change interface 3 alt no. to 3: Max. Pkt size = 0
usb 3-1: selecting invalid altsetting 3
cx231xx #1: can't change interface 3 alt no. to 3 (err=-22)
cx231xx #1: can't change interface 4 alt no. to 1: Max. Pkt size = 0
cx231xx #1: can't change interface 4 alt no. to 1 (err=-22)
cx231xx #1: Identified as Hauppauge USB Live 2 (card=9)
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: can't change interface 5 alt no. to 0 (err=-22)
cx231xx #1: Changing the i2c master port to 3
cx25840 3-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #1)
cx25840 3-0044: Firmware download size changed to 16 bytes max length
cx25840 3-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
cx231xx #1: cx231xx #1: v4l2 driver version 0.0.1
cx231xx #1: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #1: video_mux : 0
cx231xx #1: do_mode_ctrl_overrides : 0xb000
cx231xx #1: do_mode_ctrl_overrides NTSC
cx231xx #1: cx231xx #1/0: registered device video1 [v4l2]
cx231xx #1: cx231xx #1/0: registered device vbi1
cx231xx #1: V4L2 device registered as video1 and vbi1
cx231xx #1: EndPoint Addr 0x84, Alternate settings: 2
cx231xx #1: Alternate setting 0, max size= 64
cx231xx #1: Alternate setting 1, max size= 728
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 80f84e5c, ra == 80f84e30 Oops[#1]:
Cpu 0

$ 0   : 00000000 1000fc00 81b9f660 81b9f600
$ 4   : 80f9ad58 000050a1 ffffffff 00000000
$ 8   : 0000000a 00000001 00000001 0000000d
$12   : 000000ff 80e2dbd4 00000030 00000000
$16   : 80dfc000 80c93000 80fa0000 00000000
$20   : 00000002 00000000 80dfc0f8 00000001
$24   : 00000002 801539e0                 $28   : 80c52000 80c53a88 80fa0000 80f84e30
Hi    : 00000000
Lo    : 00000000
epc   : 80f84e5c 0x80f84e5c
   Not tainted
ra    : 80f84e30 0x80f84e30
Status: 1000fc03    KERNEL EXL IE
Cause : 00800008
BadVA : 00000000
PrId  : 00029006 (Broadcom BMIPS3300)
Modules linked in: cx231xx cx2341x cx25840 rc_core videobuf_vmalloc videobuf_core saa7115 usbvision pl2303 v4l2_common videodev usb_storage usbserial i2c_dev i2c_core ohci_hcd nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd sd_mod ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables tun vfat fat ext4 jbd2 mbcache b43legacy b43 nls_iso8859_1 nls_cp437 mac80211 usbcore scsi_mod nls_base crc16 cfg80211 compat input_core arc4 aes_generic crypto_algapi switch_robo switch_core diag
Process khubd (pid: 601, threadinfo=80c52000, task=81bdf208, tls=00000000)
Stack : 81bdf238 80dfc000 00000001 000002d8 00002040 0000c200 00000003 8011fa58
       70756148 67756170 61482065 61707075 20656775 69766544 00206563 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       ...
Call Trace:[<8011fa58>] 0x8011fa58
[<80c6cd9c>] 0x80c6cd9c
[<8015db94>] 0x8015db94
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c69d54>] 0x80c69d54
[<80c6bf80>] 0x80c6bf80
[<800e15a8>] 0x800e15a8
[<80c72e58>] 0x80c72e58
[<8015df14>] 0x8015df14
[<8015e118>] 0x8015e118
[<8015e0e8>] 0x8015e0e8
[<8015cb28>] 0x8015cb28
[<801197ac>] 0x801197ac
[<8015dd14>] 0x8015dd14
[<8015b9e0>] 0x8015b9e0
[<80c63f2c>] 0x80c63f2c
[<80c64d1c>] 0x80c64d1c
[<80038150>] 0x80038150
[<80c63f90>] 0x80c63f90
[<80037a0c>] 0x80037a0c
[<800070f0>] 0x800070f0
[<8003798c>] 0x8003798c
[<800070e0>] 0x800070e0

Code: 00021080  00621021  8c550000 <8ea20000> 02002821  8c42000c  0000a021  90460002  a6060c18

Disabling lock debugging due to kernel taint cx231xx #0: cx231xx_stop_stream():: ep_mask = 8 cx231xx #0: can't change interface 3 alt no. to 0 (err=-22)

hardware is a 260MHz access point running OpenWRT.

root@anchor:/# uname -a
Linux anchor 3.0.3 #13 Sun Dec 4 08:04:41 PST 2011 mips GNU/Linux

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

One more minor point:

Before the kernel oops, I have /dev/video0. After the oops, I have /dev/video0 and /dev/video1 - probably related to the ehci crash.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

Well, you probably have figured out you have a USB stack problem. I'm not sure why a Host Controller would die and (hopefully) clean up properly, but that needs investigation.

Looking at the oops probably won't yield useful results in terms of finding cx231xx bugs as it happens after the first host controller has bombed out.

You should consider having /boot/System.map and the real klogd installed on your system, so the oops backtrace has meaningful symbol names as opposed to addresses (which are meaningless to anyone without a copy of your built kernel).

Regards,
Andy

At a guess, I'm going to say that it's the hardware. This is an old (2006?) vintage access point with limited CPU horsepower. I'm not sure that any further investigations would change the result.

I suspect that the hardware is not capable of USB2 speeds although it claims it can and thus the problem. It is rock solid with USB 1.1 devices and barfs at USB 2.0 speeds.

Pain is temporary. It may last a minute, or an hour, or a day, or a year,
but eventually it will subside and something else will take its place. If
I quit, however, it lasts forever.

I'm resurrecting an older thread. I have a Hauppage USB Live2 connected to a MIPS box running openWRT. I tried this earlier on a older hardware running the 3.0.3 kernel. This is with newer hardware running 2.6.39.4. The driver attempts to allocate 800MB (!!!) of memory for the buffer and fails with a kernel crash. I'm not including any kernel crash stuff as it has all the symbols stripped.

This seems to be the key message:

[  514.770000] unable to allocate 805398992 bytes for transfer buffer 0

What can I do to narrow down the allocation problem?

system type : Atheros AR9132 rev 2
machine : Buffalo WZR-HP-G300NH
processor : 0
cpu model : MIPS 24Kc V7.4
BogoMIPS : 265.42

Bus 001 Device 005: ID 2040:c200 Hauppauge

[   34.560000] cx231xx v4l2 driver loaded.
[   34.570000] cx231xx #0: New device Hauppauge Hauppauge Device @ 480 Mbps (2040:c200) with 5 interfaces
[   34.580000] cx231xx #0: registering interface 1
[   34.580000] cx231xx #0: bad senario!!!!!
[   34.590000] cx231xx #0: config_info=0
[   34.590000] cx231xx #0: can't change interface 1 alt no. to 3: Max. Pkt size = 0
[   34.600000] usb 1-1.2: selecting invalid altsetting 3
[   34.600000] cx231xx #0: can't change interface 1 alt no. to 3 (err=-22)
[   34.610000] cx231xx #0: can't change interface 1 alt no. to 1: Max. Pkt size = 0
[   34.620000] usb 1-1.2: selecting invalid altsetting 1
[   34.620000] cx231xx #0: can't change interface 1 alt no. to 1 (err=-22)
[   34.630000] cx231xx #0: Identified as Hauppauge USB Live 2 (card=9)
[   34.740000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[   34.760000] cx231xx #0: Changing the i2c master port to 3
[   34.760000] cx25840 0-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0)
[   34.790000] cx25840 0-0044:  Firmware download size changed to 16 bytes max length
[   36.770000] cx25840 0-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
[   36.810000] cx231xx #0: cx231xx #0: v4l2 driver version 0.0.1
[   36.840000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[   36.890000] cx231xx #0: video_mux : 0
[   36.900000] cx231xx #0: do_mode_ctrl_overrides : 0xb000
[   36.900000] cx231xx #0: do_mode_ctrl_overrides NTSC
[   36.910000] cx231xx #0: cx231xx #0/0: registered device video0 [v4l2]
[   36.920000] cx231xx #0: cx231xx #0/0: registered device vbi0
[   36.930000] cx231xx #0: V4L2 device registered as video0 and vbi0
[   36.930000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1
[   36.940000] cx231xx #0: Alternate setting 0, max size= 8
[   36.940000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1
[   36.950000] cx231xx #0: Alternate setting 0, max size= 8
[   36.960000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1
[   36.960000] cx231xx #0: Alternate setting 0, max size= 8
[   36.970000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1
[   36.970000] cx231xx #0: Alternate setting 0, max size= 8
[   36.980000] usbcore: registered new interface driver cx231xx
[   37.230000] ar71xx-wdt: enabling watchdog timer

root@rtmovies:/www/tmp/root/etc# fswebcam -r 320x240
--- Opening /dev/video0...
Trying source module v4l2...
/dev/video0 opened.
No input was specified, using the first.
VIDIOC_QBUF: Cannot allocate memory
Unable to use mmap. Using read instead.
--- Capturing frame...
VIDIOC_DQBUF: Invalid argument
No frames captured.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

800 MB for 320x420 frames? It sounds like your app has gooned its requested buffer size.

<wild speculation>
This might be due to endianess differences between MIPS abd x86 and your app only being written and tested on x86. </wild speculation>

You still appear to USB stack problems, but not as severe (can't change device config to some bogus config).

Regards,
Andy

That's an understatement. :-)

My speculation too. I don't know where that number comes from; the same app works fine with the saa7115 driver if I switch frame grabbers. I'll have to do some fiddling with the code to figure out where the problem lies. It's some interaction between the app and the cx231xx driver.

The requested buffer size is the result of multiplying max_pkt_size * max_packets and the rejected config shows a max_packet_size of 0, maybe ithere;'s a problem with either endianness or int size... ??? Something to follow up on.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

For what it's worth, I did do quite a bit of work on cx231xx, including work for mips and arm platforms. That said, all the work done was on the control interfaces rather than the buffer management (my particular use case didn't have the video coming back over the USB bus).

How does your app setup the buffers? Is it doing MMAP? Userptr? It's possible userptr support is broken, as that's something that is much less common.

And as Andy suggested, if you can test your app under x86, knowing whether the app works with cx231xx under x86 is useful in knowing if you have a mips issue or something that your app in particular is doing.

Also, just to be clear, the USB Live 2 doesn't have any onboard hardware compression. It has comparable requirements related to USB bus utilization as any other USB framegrabber. The only possible advantage you might get is that it does have an onboard scaler, so if you're willing to compromise on quality you can change the capture resolution to a lower value such as 320x240. Also, bear in mind that the cx231xx driver may not be properly tuned to reduce the alternate it uses dependent on resolution. To my knowledge that functionality has not been thoroughly tested (as it's an unpopular use case).

And finally, there were fixes for the USB Live 2 specifically which you may not have in 3.0.3. You should check the changelogs. It's possible that the failure to set the USB alternate is leaving the driver is an unknown state, which causes it to crash once actually trying to allocate the buffers.

Devin

Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

OK, I just tried this with motion (still on the MIPS platform), a totally different app. It tries to allocate a reasonable amount of memory:

[1] mmap information:
[1] frames=4
[1] 0 length=153600
[1] 1 length=153600
[1] 2 length=153600
[1] 3 length=153600
[1] buffer index 0 VIDIOC_QBUF: Cannot allocate memory
[1] ioctl (VIDIOCGCAP): Invalid argument

but the driver still tries to grab 800MB. So it's somewhere between the app and the driver.

OK, thanks. I was hoping this was a hardware framegrabber; the info on the website is so ambiguous as to be nearly useless.

Will do.

Pain is temporary. It may last a minute, or an hour, or a day, or a year,
but eventually it will subside and something else will take its place. If
I quit, however, it lasts forever.

I think you're just confused about the terminology. The term "framegrabber" inherently means that it's delivering raw video (as opposed to having onboard compression and providing MPEG or some other compressed format). All framegrabbers are hardware framegrabbers.

There were some *really* old devices that delivered the frames with JPEG or proprietary compression so that they fit within USB 1.1, but those designs are almost entirely gone given the hardware cost and the lack of need since almost everything nowadays is USB 2.0.

You may wish to look at the HVR-1950, which is well supported under Linux and does deliver MPEG video. It's obviously more expensive that the USB Live 2 and it has a tuner which you probably don't need, but it does avoid the issue if you have USB bus constraints.

Devin

Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

Aha. Thanks for the explanation.

I had looked at the HVR-1950 but the power consumption was prohibitive for my application. :-(

--Yan

Pain is temporary. It may last a minute, or an hour, or a day, or a year,
but eventually it will subside and something else will take its place. If
I quit, however, it lasts forever.

HAH!

This simple patch fixes it on my MIPS platform - not tested on other architectures as I don't have them readily available running a newer kernel:

@@ -672,7 +672,9 @@
    pcb config it is related to */
    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, BOARD_CFG_STAT, data, 4);
 
-    config_info = *((u32 *) data);
+    //config_info = *((u32 *) data);
+    config_info = *(data);
+    cx231xx_info("config_info %x\n",config_info);
    usb_speed = (u8) (config_info & 0x1);
 
    /* Verify this device belongs to Bus power or Self power device */

No more errors and the frame grabber works up to 480x320 even on a slow MIPS board.

[   33.640000] cx231xx v4l2 driver loaded.
[   33.650000] cx231xx #0: New device Hauppauge Hauppauge Device @ 480 Mbps (2040:c200) with 5 interfaces
[   33.660000] cx231xx #0: registering interface 1
[   33.660000] cx231xx #0: config_info c9
[   33.670000] cx231xx #0: can't change interface 3 alt no. to 3: Max. Pkt size = 0
[   33.680000] cx231xx #0: can't change interface 4 alt no. to 1: Max. Pkt size = 0
[   33.690000] cx231xx #0: Identified as Hauppauge USB Live 2 (card=9)
[   33.800000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[   33.820000] cx231xx #0: Changing the i2c master port to 3
[   33.820000] cx25840 0-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0)
[   33.850000] cx25840 0-0044:  Firmware download size changed to 16 bytes max length
[   35.880000] cx25840 0-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
[   35.920000] cx231xx #0: cx231xx #0: v4l2 driver version 0.0.1
[   35.950000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[   36.000000] cx231xx #0: video_mux : 0
[   36.010000] cx231xx #0: do_mode_ctrl_overrides : 0xb000
[   36.010000] cx231xx #0: do_mode_ctrl_overrides NTSC
[   36.020000] cx231xx #0: cx231xx #0/0: registered device video0 [v4l2]
[   36.030000] cx231xx #0: cx231xx #0/0: registered device vbi0
[   36.040000] cx231xx #0: V4L2 device registered as video0 and vbi0
[   36.040000] cx231xx #0: EndPoint Addr 0x8400, Alternate settings: 5
[   36.050000] cx231xx #0: Alternate setting 0, max size= 512
[   36.050000] cx231xx #0: Alternate setting 1, max size= 184
[   36.060000] cx231xx #0: Alternate setting 2, max size= 728
[   36.070000] cx231xx #0: Alternate setting 3, max size= 2892
[   36.070000] cx231xx #0: Alternate setting 4, max size= 1800
[   36.080000] cx231xx #0: EndPoint Addr 0x8500, Alternate settings: 2
[   36.080000] cx231xx #0: Alternate setting 0, max size= 512
[   36.090000] cx231xx #0: Alternate setting 1, max size= 512
[   36.090000] cx231xx #0: EndPoint Addr 0x8600, Alternate settings: 2
[   36.100000] cx231xx #0: Alternate setting 0, max size= 512
[   36.110000] cx231xx #0: Alternate setting 1, max size= 576
[   36.110000] usbcore: registered new interface driver cx231xx
[   36.320000] ar71xx-wdt: enabling watchdog timer

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

OK, too groggy last night with my own success... Here's the better solution. Should work on all architectures.

diff -U3 /data10/home/yan/openwrt/backfire/trunk/build_dir/linux-brcm47xx/linux-3.0.3/drivers/media/video/cx231xx/cx231xx-pcb-cfg.c cx231xx-pcb-cfg.c
@@ -672,7 +672,9 @@
    pcb config it is related to */
    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, BOARD_CFG_STAT, data, 4);
 
-    config_info = *((u32 *) data);
+    //config_info = *((u32 *) data);
+    config_info = ((u32)(*(data))) + (((u32)(*(data+1))) << 8) + (((u32)(*(data+2))) << 16) + (((u32)(*(data+3))) << 24);
+    cx231xx_info("config_info %x\n",config_info);
    usb_speed = (u8) (config_info & 0x1);
 
    /* Verify this device belongs to Bus power or Self power device */

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
   Albert Einstein

Yes, you need the firmware file. :)

Regards,
Andy