New version of webcamd [3.11.0.1] ready for testing
Srinivas KANDAGATLA
srinivas.kandagatla at st.com
Fri Aug 16 20:01:37 UTC 2013
+ adding Mauro Chehab
On 16/08/13 17:51, Hans Petter Selasky wrote:
> Hi Jurgen,
>
> I think this is something broken at the Linux side or I have sources out of sync.
> You should just ignore the NULL function pointer, hence the technisat driver does not have these callbacks.
I agree, I was under the impression that open/close are mandatory.
Can you please send a patch to fix this to linux-media at vger.kernel.org.
Thanks,
srini
> Change:
> if (!rdev->users++)
> rval = rdev->open(rdev);
> Into:
> if (!rdev->users++ && rdev->open != NULL)
> rval = rdev->open(rdev);
>
> And the same for the:
>
> rdev->close
>
> case.
>
> CC'ed: Srinivas KANDAGATLA
>
> https://lkml.org/lkml/2013/7/22/93
>
> --HPS
>
>
>
> -----Original message-----
>> From:Juergen Lock <nox at jelal.kn-bremen.de <mailto:nox at jelal.kn-bremen.de> >
>> Sent: Friday 16th August 2013 18:05
>> To: Hans Petter Selasky <hans.petter.selasky at bitfrost.no <mailto:hans.petter.selasky at bitfrost.no> >
>> Cc: freebsd-multimedia at freebsd.org <mailto:freebsd-multimedia at freebsd.org>
>> Subject: Re: New version of webcamd [3.11.0.1] ready for testing
>>
>> On Fri, Aug 16, 2013 at 02:23:06PM +0200, Hans Petter Selasky wrote:
>>> Hi,
>> Hi!
>>>
>>> There is a new version of webcamd available. Changes:
>>>
>>> - Update to the latest and greatest Linux V4L codebase (Linux 3.11).
>>>
>>> Please test and report back!
>>>
>>> svn --username anonsvn --password anonsvn \
>>> checkout svn://svn.turbocat.net/i4b/trunk/ports
>>>
>> Segfaults with technisat-usb2:
>>
>> Linux video capture interface: v2.00
>> lirc_dev: IR Remote Control driver registered, major 14
>> IR NEC protocol handler initialized
>> IR RC5(x) protocol handler initialized
>> IR RC6 protocol handler initialized
>> IR JVC protocol handler initialized
>> IR Sony protocol handler initialized
>> IR RC5 (streamzap) protocol handler initialized
>> IR SANYO protocol handler initialized
>> IR LIRC bridge handler initialized
>> b2c2-flexcop: B2C2 FlexcopII/II(b)/III digital TV receiver chip loaded successfully
>> uvcvideo: Unable to create debugfs directory
>> USB Video Class driver (1.1.1)
>> cpia2: V4L-Driver for Vision CPiA2 based cameras v3.0.1
>> au0828 driver loaded
>> pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
>> pvrusb2: Debug mask is 31 (0x1f)
>> USBVision USB Video Device Driver for Linux : 0.9.11
>> Em28xx: Initialized (Em28xx dvb Extension) extension
>> virtual DVB server adapter driver, version 1.0-hps, (c) 2011 Hans Petter Selasky
>> Attached to ugen5.2[0]
>> technisat-usb2: set alternate setting
>> technisat-usb2: firmware version: 17.63
>> dvb-usb: found a 'Technisat SkyStar USB HD (DVB-S/S2)' in warm state.
>> dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
>> DVB: registering new adapter (Technisat SkyStar USB HD (DVB-S/S2))
>> dvb-usb: MAC address: 0x8014c3188M
>> stv6110x_attach: Attaching STV6110x
>> DBG: : dvb_register_frontend:
>> INFO: : DVB: registering adapter 0 frontend 0 (Technisat SkyStar USB HD (DVB-S/S2))...
>> DBG: : dvb_frontend_clear_cache: Clearing cache for delivery system 5
>> Registered IR keymap rc-technisat-usb2
>> rc0: IR-receiver inside an USB DVB receiver as webcamd
>> DBG: rc0: lirc_dev: lirc_register_driver: sample_rate: 0
>> INFO: rc0: lirc_dev: driver ir-lirc-codec (technisat-usb2) registered at minor = 0
>> dvb-usb: schedule remote query interval to 100 msecs.
>> dvb-usb: Technisat SkyStar USB HD (DVB-S/S2) successfully initialized and connected.
>> Waiting for HAL USB device.
>> Creating /dev/dvb/adapter0/demux0
>> Creating /dev/dvb/adapter0/dvr0
>> DBG: : dvb_frontend_open:
>> DBG: : dvb_frontend_release:
>> Creating /dev/dvb/adapter0/frontend0
>> DBG: rc0: lirc_dev (ir-lirc-codec (technisat-usb2)[0]): open called
>> zsh: segmentation fault (core dumped) webcamd-31101x -d 5.2 -H
>> # gdb $(which webcamd-31101x ) webcamd.core
>> GNU gdb 6.1.1 [FreeBSD]
>> Copyright 2004 Free Software Foundation, Inc.
>> GDB is free software, covered by the GNU General Public License, and you are
>> welcome to change it and/or distribute copies of it under certain conditions.
>> Type "show copying" to see the conditions.
>> There is absolutely no warranty for GDB. Type "show warranty" for details.
>> This GDB was configured as "amd64-marcel-freebsd"...
>>
>> warning: core file may not match specified executable file.
>> Core was generated by `webcamd'.
>> Program terminated with signal 11, Segmentation fault.
>> Reading symbols from /usr/local/lib/libdbus-1.so.3...done.
>> Loaded symbols for /usr/local/lib/libdbus-1.so.3
>> Reading symbols from /usr/local/lib/libhal.so.1...done.
>> Loaded symbols for /usr/local/lib/libhal.so.1
>> Reading symbols from /usr/lib/libusb.so.2...done.
>> Loaded symbols for /usr/lib/libusb.so.2
>> Reading symbols from /usr/local/lib/libcuse4bsd.so.1...done.
>> Loaded symbols for /usr/local/lib/libcuse4bsd.so.1
>> Reading symbols from /lib/libutil.so.8...done.
>> Loaded symbols for /lib/libutil.so.8
>> Reading symbols from /lib/libthr.so.3...done.
>> Loaded symbols for /lib/libthr.so.3
>> Reading symbols from /lib/libc.so.7...done.
>> Loaded symbols for /lib/libc.so.7
>> Reading symbols from /libexec/ld-elf.so.1...done.
>> Loaded symbols for /libexec/ld-elf.so.1
>> #0 0x0000000000000000 in ?? ()
>> [New Thread 8014087c0 (LWP 100307/webcamd)]
>> [New Thread 801408980 (LWP 100306/webcamd)]
>> [New Thread 801408b40 (LWP 100305/webcamd)]
>> [New Thread 801408d00 (LWP 100304/webcamd)]
>> [New Thread 801409080 (LWP 100303/webcamd)]
>> [New Thread 801409240 (LWP 100302/webcamd)]
>> [New Thread 801409400 (LWP 100301/webcamd)]
>> [New Thread 8014095c0 (LWP 100299/webcamd)]
>> [New Thread 801409940 (LWP 100298/webcamd)]
>> [New Thread 801409b00 (LWP 100289/webcamd)]
>> [New Thread 801409cc0 (LWP 100288/webcamd)]
>> [New Thread 801409e80 (LWP 100287/webcamd)]
>> [New Thread 80140a3c0 (LWP 100274/webcamd)]
>> [New Thread 80140a740 (LWP 100265/webcamd)]
>> [New Thread 80140aac0 (LWP 100260/webcamd)]
>> [New Thread 80140ac80 (LWP 100229/webcamd)]
>> [New Thread 80140ae40 (LWP 100159/webcamd)]
>> [New Thread 80144f1c0 (LWP 100146/webcamd)]
>> [New Thread 8014041c0 (LWP 100541/initial thread)]
>> (gdb) bt
>> #0 0x0000000000000000 in ?? ()
>> #1 0x00000000005abcca in rc_open (rdev=0x8015aea00)
>> at media_tree/drivers/media/rc/rc-main.c:711
>> #2 0x00000000005ae488 in lirc_dev_fop_open (inode=0x801499508,
>> file=0x801499520) at media_tree/drivers/media/rc/lirc_dev.c:472
>> #3 0x000000000070e8db in linux_open (f_v4b=288, fflags=0)
>> at kernel/linux_file.c:57
>> #4 0x0000000000715a21 in v4b_create (unit=-1) at webcamd.c:353
>> #5 0x0000000000716636 in main (argc=4, argv=0x7fffffffe2b8) at webcamd.c:719
>> (gdb) fr 1
>> #1 0x00000000005abcca in rc_open (rdev=0x8015aea00)
>> at media_tree/drivers/media/rc/rc-main.c:711
>> 711 rval = rdev->open(rdev);
>> (gdb) p rdev
>> $1 = (struct rc_dev *) 0x8015aea00
>> (gdb) p *rdev
>> $2 = {dev = {minor = 0, busnum = 0, kobj = {parent = 0x0}, refcount = {
>> refcount = {counter = 1}}, release = 0, driver = 0x0,
>> parent = 0x8014be000, type = 0x954700, platform_data = 0x0,
>> driver_data = 0x8015aea00, fops = 0x0, cdev = 0x0, class = 0x9545a0,
>> driver_static = {name = 0x0, owner = 0x0, pm = 0x0}, devt = 0,
>> name = "rc0", '\0' <repeats 60 times>, bus_name = '\0' <repeats 31 times>,
>> bus_id = '\0' <repeats 31 times>},
>> input_name = 0x77e958 "IR-receiver inside an USB DVB receiver",
>> input_phys = 0x8014c42a8 "usb-/dev/usb-/dev/usb/ir0", input_id = {
>> bustype = 3, vendor = 5367, product = 1280, version = 1},
>> driver_name = 0x787852 "technisat-usb2",
>> map_name = 0x787840 "rc-technisat-usb2", rc_map = {scan = 0x80148ae00,
>> size = 64, len = 33, alloc = 512, rc_type = RC_TYPE_RC5,
>> name = 0x770887 "rc-technisat-usb2", lock = <incomplete type>}, lock = {
>> sem = {value = 0, owner = 0x8014041c0}}, devno = 0, raw = 0x80148ac00,
>> input_dev = 0x8015b9400, driver_type = RC_DRIVER_IR_RAW, idle = false,
>> allowed_protos = 262143, enabled_protocols = 18446744073709551615,
>> users = 1, scanmask = 0, priv = 0x8014c2000, keylock = <incomplete type>,
>> keypressed = false, keyup_jiffies = 0, timer_keyup = {entry = {
>> tqe_next = 0x0, tqe_prev = 0x0}, function = 0x5ab930 <ir_timer_keyup>,
>> expires = 0, data = 34382473728}, last_keycode = 0, last_scancode = 0,
>> last_toggle = 0 '\0', timeout = 0, min_timeout = 0, max_timeout = 0,
>> rx_resolution = 0, tx_resolution = 0, change_protocol = 0, open = 0,
>> ---Type <return> to continue, or q <return> to quit---
>> close = 0, s_tx_mask = 0, s_tx_carrier = 0, s_tx_duty_cycle = 0,
>> s_rx_carrier_range = 0, tx_ir = 0, s_idle = 0, s_learning_mode = 0,
>> s_carrier_report = 0}
>> (gdb) p rdev->open
>> $3 = (int (*)(struct rc_dev *)) 0
>> (gdb) q
>>
>> Thanx,
>> Juergen
>>
>> PS: pctv452e (TT-S2 3600) and dual dib0700 seem to work so far.
>>
>
>
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