[Qce-ga-discussion] Trouble with qc-usb driver on SuSE Linux 9.2

[Olav R. <qc....@sp...>]

Hi there,


I'm trying to get the qc-usb driver to work on my upgraded Linux system. It 
used to work fine with SuSE 9.0 and 9.1, but with 9.2 that's no longer the 
case.

My system is a relatively fresh install of SuSE Linux 9.2 with all updates 
available in Yast installed. The current kernel version is 
2.6.8-24.11-default.


1) Building the driver

While building the driver, the following error occurs:

/mnt/raid/home/panter/src/sf/test/qc-usb-0.6.2/qc-driver.c: In function 
`qc_i2c_init':
/mnt/raid/home/panter/src/sf/test/qc-usb-0.6.2/qc-driver.c:813: error: 
structure has no member named `timeout'

This is easily fixed, just comment out the line.


2) Installing the new module

Once compilation is done, the quickcam.ko module installs successfully:

The driver detected the following supported cameras:
quickcam: no version for "struct_module" found: kernel tainted.
quickcam: QuickCam USB camera found (driver version QuickCam USB $Date: 
2004/07/29 18:12:39 $)
quickcam: Kernel:2.6.8-24.11-default bus:3 class:FF subclass:FF vendor:046D 
product:0870
quickcam: Sensor HDCS-1000/1100 detected
quickcam: Registered device: /dev/video0


However, when I try to use it with the xawtv application, it fails to produce 
any video pictures. The following errors appear in the console:

This is xawtv-3.94, running on Linux/i686 (2.6.8-24.11-default)
/dev/video0 [v4l]: no overlay support
v4l-conf had some trouble, trying to continue anyway
ioctl: 
VIDIOC_QUERYCAP(driver="";card="";bus_info="";version=0.0.0;capabilities=0x0 
[]): Unknown error 515
lirc: connection lost
ioctl: VIDIOCSYNC(int=0): No space left on device
ioctl: VIDIOCMCAPTURE(frame=0;height=32;width=48;format=15): Invalid argument
ioctl: VIDIOCMCAPTURE(frame=0;height=32;width=48;format=9): Invalid argument
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): Interrupted system call
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): Interrupted system call
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): Interrupted system call
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): Interrupted system call
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): Interrupted system call
no way to get: 384x288 16 bit TrueColor (LE)
no way to get: 384x288 16 bit TrueColor (LE)
Segmentation fault


The segmentation fault occurs when xawtv is quit (by closing the window). The 
following errors appear in my system log:

Feb 20 14:57:31 panterbox kernel: Unable to handle kernel NULL pointer 
dereference at virtual address 000000c4
Feb 20 14:57:31 panterbox kernel:  printing eip:
Feb 20 14:57:31 panterbox kernel: f9637f46
Feb 20 14:57:31 panterbox kernel: *pde = 00000000
Feb 20 14:57:31 panterbox kernel: Oops: 0000 [#1]
Feb 20 14:57:31 panterbox kernel: Modules linked in: quickcam snd_seq_oss 
snd_seq_midi_event snd_seq snd_seq_device bttv video_b
uf firmware_class i2c_algo_bit v4l2_common btcx_risc videodev radeon usbserial 
parport_pc lp parport ir_kbd_i2c ir_common speeds
tep_lib freq_table thermal processor fan button battery ac ipt_tos ipt_MARK 
ipt_length cls_fw sch_htb ipt_TOS ipt_TCPMSS ipt_MAS
QUERADE snd_pcm_oss snd_mixer_oss snd_intel8x0 snd_ac97_codec snd_pcm 
snd_timer asb100 snd soundcore w83l785ts i2c_sensor snd_pa
ge_alloc i2c_nforce2 i2c_core ipt_pkttype af_packet ip6t_LOG ip6t_state 
ip6_conntrack ipt_LOG ipt_state ip6t_REJECT ipt_REJECT i
ptable_mangle iptable_filter ip6table_mangle ip_nat_ftp iptable_nat 
ip_conntrack_ftp ip_conntrack ip_tables ip6table_filter ip6_
tables ipv6 binfmt_misc subfs nls_cp437 vfat fat nls_utf8 ntfs edd evdev 
joydev sg st sr_mod usbhid usb_storage ide_cd cdrom nvi
dia_agp agpgart ohci_hcd ehci_hcd ohci1394 ieee1394 3c59x dm_mod usbcore 
sk98lin forcedeth reiserfs 3w_xxxx sd_mod scsi_mod
Feb 20 14:57:31 panterbox kernel: CPU:    0
Feb 20 14:57:31 panterbox kernel: EIP:    0060:[<f9637f46>]    Tainted:  GF U 
VLI
Feb 20 14:57:31 panterbox kernel: EFLAGS: 00010202   (2.6.8-24.11-default 
SL92_BRANCH-200501141301260000)
Feb 20 14:57:31 panterbox kernel: EIP is at usb_unlink_urb+0x16/0x50 [usbcore]
Feb 20 14:57:31 panterbox kernel: eax: cdc127c0   ebx: e2d24000   ecx: 
00000002   edx: 00000004
Feb 20 14:57:31 panterbox kernel: esi: cdc127c0   edi: f75c49c8   ebp: 
f7093c98   esp: e2d25f70
Feb 20 14:57:31 panterbox kernel: ds: 007b   es: 007b   ss: 0068
Feb 20 14:57:31 panterbox kernel: Process xawtv (pid: 20663, 
threadinfo=e2d24000 task=e61e2000)
Feb 20 14:57:31 panterbox kernel: Stack: f93e3059 00000000 e2982234 f93e4d6a 
e2982000 f93f22c8 f93e53f8 e2982000
Feb 20 14:57:31 panterbox kernel:        f93e564c e4242a60 cde8c080 c0151bf6 
e4242a60 00000000 f76cdbc0 e2d24000
Feb 20 14:57:31 panterbox kernel:        c0150703 00000004 080bde30 40216c9c 
c0105c69 00000004 00068100 406e710c
Feb 20 14:57:31 panterbox kernel: Call Trace:
Feb 20 14:57:31 panterbox kernel:  [<f93e3059>] qc_unlink_urb_sync+0x29/0x40 
[quickcam]
Feb 20 14:57:31 panterbox kernel:  [<f93e4d6a>] qc_isoc_stop+0x2a/0xd0 
[quickcam]
Feb 20 14:57:31 panterbox kernel:  [<f93e53f8>] qc_capt_exit+0x8/0x30 
[quickcam]
Feb 20 14:57:31 panterbox kernel:  [<f93e564c>] qc_v4l_close+0x5c/0x70 
[quickcam]
Feb 20 14:57:31 panterbox kernel:  [<c0151bf6>] __fput+0xd6/0x120
Feb 20 14:57:31 panterbox kernel:  [<c0150703>] filp_close+0x43/0x70
Feb 20 14:57:31 panterbox kernel:  [<c0105c69>] sysenter_past_esp+0x52/0x79
Feb 20 14:57:31 panterbox kernel: Code: 00 20 00 00 ba 00 20 00 00 bd 00 20 00 
00 e9 7c ff ff ff 89 f6 ba ea ff ff ff 85 c0 74 2
3 f6 40 28 10 74 21 8b 50 1c 85 d2 74 11 <8b> 92 c0 00 00 00 85 d2 74 07 8b 4a 
24 85 c9 75 13 ba ed ff ff


Any hints on how to fix the driver for this kernel?
Please let me know if you need more information to diagnose the problem.


Regards,
Olav