Andy Walls wrote:
> On Fri, 2009-01-09 at 15:40 +0300, Goga777 wrote:
>> hI
>>
>> With today v4l-dvb I couldn't run my hvr4000 card on 2.6.27 kernel
>
>
>> [ 14.555162] cx88/2: cx2388x dvb driver version 0.0.6 loaded
>> [ 14.555231] cx88/2: registering cx8802 driver, type: dvb access: shared
>> [ 14.555303] cx88[0]/2: subsystem: 0070:6900, board: Hauppauge WinTV-HVR4000 DVB-S/S2/T/Hybrid [card=68]
>> [ 14.555374] cx88[0]/2: cx2388x based DVB/ATSC card
>> [ 14.555446] BUG: unable to handle kernel NULL pointer dereference at 00000000
>> [ 14.555560] IP: [<c02e6bff>] __mutex_lock_common+0x3c/0xe4
>> [ 14.555652] *pde = 00000000
>> [ 14.555735] Oops: 0002 [#1] SMP
>> [ 14.555851] Modules linked in: cx88_dvb(+) cx88_vp3054_i2c videobuf_dvb wm8775 dvb_core tuner_simple tuner_types snd_seq_dummy tda9887 snd_seq_oss(+) snd_intel8x0(+) tda8290 snd_seq_midi snd_seq_midi_event snd_ac97_codec cx88_alsa(+) snd_seq ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_rawmidi snd_timer tuner snd_seq_device psmouse snd serio_raw ivtv(+) cx8800 cx8802 cx88xx soundcore cx2341x ir_common ns558 i2c_i801 v4l2_common videodev i2c_algo_bit gameport v4l1_compat snd_page_alloc tveeprom pcspkr floppy videobuf_dma_sg videobuf_core btcx_risc i2c_core parport_pc parport button intel_agp agpgart shpchp pci_hotplug rng_core iTCO_wdt sd_mod evdev usbhid hid ff_memless ext3 jbd mbcache ide_cd_mod cdrom ide_disk ata_piix libata dock 8139too usb_storage scsi_mod piix 8139cp mii ide_co
> re uhci_hcd ehci_hcd usbcore thermal processor fan thermal_sys
>> [ 14.557013]
>> [ 14.557013] Pid: 2310, comm: modprobe Not tainted (2.6.27.1-custom-default1 #1)
>> [ 14.557013] EIP: 0060:[<c02e6bff>] EFLAGS: 00010246 CPU: 1
>> [ 14.557013] EIP is at __mutex_lock_common+0x3c/0xe4
>> [ 14.557013] EAX: de653e98 EBX: de739118 ECX: de739120 EDX: 00000000
>> [ 14.557013] ESI: dd4209e0 EDI: de73911c EBP: de653eb0 ESP: de653e88
>> [ 14.557013] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
>> [ 14.557013] Process modprobe (pid: 2310, ti=de652000 task=dd4209e0 task.ti=de652000)
>> [ 14.557013] Stack: 3535352e 5d343733 00000002 de739120 de739120 00000000 c044a6c0 de739110
>> [ 14.557013] de739118 00000001 de653ebc c02e6d38 c02e6b88 de653ec4 c02e6b88 de653ed8
>> [ 14.557013] e1ac7115 de6a9000 00000001 00000000 de653f0c e1aeca62 de739004 de739000
>> [ 14.557013] Call Trace:
>> [ 14.557013] [<c02e6d38>] ? __mutex_lock_slowpath+0x17/0x1a
>> [ 14.557013] [<c02e6b88>] ? mutex_lock+0x12/0x14
>> [ 14.557013] [<c02e6b88>] ? mutex_lock+0x12/0x14
>> [ 14.557013] [<e1ac7115>] ? videobuf_dvb_get_frontend+0x19/0x40 [videobuf_dvb]
>> [ 14.557013] [<e1aeca62>] ? cx8802_dvb_probe+0xc9/0x1945 [cx88_dvb]
>> [ 14.557013] [<e09ee41e>] ? cx8802_register_driver+0xbd/0x1ac [cx8802]
>> [ 14.557013] [<e09ee467>] ? cx8802_register_driver+0x106/0x1ac [cx8802]
>> [ 14.557013] [<e1aee37f>] ? dvb_init+0x22/0x27 [cx88_dvb]
>> [ 14.557013] [<c0101132>] ? _stext+0x42/0x11a
>> [ 14.557013] [<e1aee35d>] ? dvb_init+0x0/0x27 [cx88_dvb]
>> [ 14.557013] [<c013d2ca>] ? __blocking_notifier_call_chain+0xe/0x51
>> [ 14.557013] [<c014970b>] ? sys_init_module+0x8c/0x17d
>> [ 14.557013] [<c0103b42>] ? syscall_call+0x7/0xb
>> [ 14.557013] [<c013007b>] ? round_jiffies_relative+0x14/0x16
>> [ 14.557013] =======================
>> [ 14.557013] Code: 78 04 89 f8 89 55 e0 64 8b 35 00 30 3f c0 e8 2e 0c 00 00 8d 43 08 89 45 e4 8b 53 0c 8d 45 e8 8b 4d e4 89 43 0c 89 4d e8 89 55 ec <89> 02 89 75 f0 83 c8 ff 87 03 48 74 55 8a 45 e0 8b 4d e0 83 e0
>> [ 14.557013] EIP: [<c02e6bff>] __mutex_lock_common+0x3c/0xe4 SS:ESP 0068:de653e88
>> [ 14.565211] ---[ end trace 94d8b014e067ac7b ]---
>
>
> I don't have the hardware to test with. Please try this patch.
>
> Regards,
> Andy
>
Hi
I got the same error on my box with a hvr4000 and tt3200.
This path solved this issue for me.
--
pierre
>
> Signed-off-by: Andy Walls <awalls@xxxxxxxxx>
>
> diff -r a28c39659c25 linux/drivers/media/video/cx88/cx88-dvb.c
> --- a/linux/drivers/media/video/cx88/cx88-dvb.c Sat Jan 10 16:04:45 2009 -0500
> +++ b/linux/drivers/media/video/cx88/cx88-dvb.c Sun Jan 11 19:13:10 2009 -0500
> @@ -621,33 +621,40 @@ static struct stv0288_config tevii_tuner
> .set_ts_params = cx24116_set_ts_param,
> };
>
> +static int cx8802_alloc_frontends(struct cx8802_dev *dev)
> +{
> + struct cx88_core *core = dev->core;
> + struct videobuf_dvb_frontend *fe = NULL;
> + int i;
> +
> + mutex_init(&dev->frontends.lock);
> + INIT_LIST_HEAD(&dev->frontends.felist);
> +
> + if (!core->board.num_frontends)
> + return -ENODEV;
> +
> + printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__,
> + core->board.num_frontends);
> + for (i = 1; i <= core->board.num_frontends; i++) {
> + fe = videobuf_dvb_alloc_frontend(&dev->frontends, i);
> + if (!fe) {
> + printk(KERN_ERR "%s() failed to alloc\n", __func__);
> + videobuf_dvb_dealloc_frontends(&dev->frontends);
> + return -ENOMEM;
> + }
> + }
> + return 0;
> +}
> +
> static int dvb_register(struct cx8802_dev *dev)
> {
> struct cx88_core *core = dev->core;
> struct videobuf_dvb_frontend *fe0, *fe1 = NULL;
> int mfe_shared = 0; /* bus not shared by default */
> - int i;
>
> if (0 != core->i2c_rc) {
> printk(KERN_ERR "%s/2: no i2c-bus available, cannot attach dvb drivers\n", core->name);
> goto frontend_detach;
> - }
> -
> - if (!core->board.num_frontends)
> - return -EINVAL;
> -
> - mutex_init(&dev->frontends.lock);
> - INIT_LIST_HEAD(&dev->frontends.felist);
> -
> - printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__,
> - core->board.num_frontends);
> - for (i = 1; i <= core->board.num_frontends; i++) {
> - fe0 = videobuf_dvb_alloc_frontend(&dev->frontends, i);
> - if (!fe0) {
> - printk(KERN_ERR "%s() failed to alloc\n", __func__);
> - videobuf_dvb_dealloc_frontends(&dev->frontends);
> - goto frontend_detach;
> - }
> }
>
> /* Get the first frontend */
> @@ -1253,6 +1260,8 @@ static int cx8802_dvb_probe(struct cx880
> struct cx88_core *core = drv->core;
> struct cx8802_dev *dev = drv->core->dvbdev;
> int err;
> + struct videobuf_dvb_frontend *fe;
> + int i;
>
> dprintk( 1, "%s\n", __func__);
> dprintk( 1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
> @@ -1268,39 +1277,34 @@ static int cx8802_dvb_probe(struct cx880
> /* If vp3054 isn't enabled, a stub will just return 0 */
> err = vp3054_i2c_probe(dev);
> if (0 != err)
> - goto fail_probe;
> + goto fail_core;
>
> /* dvb stuff */
> printk(KERN_INFO "%s/2: cx2388x based DVB/ATSC card\n", core->name);
> dev->ts_gen_cntrl = 0x0c;
>
> + err = cx8802_alloc_frontends(dev);
> + if (err)
> + goto fail_core;
> +
> err = -ENODEV;
> - if (core->board.num_frontends) {
> - struct videobuf_dvb_frontend *fe;
> - int i;
> -
> - for (i = 1; i <= core->board.num_frontends; i++) {
> - fe = videobuf_dvb_get_frontend(&core->dvbdev->frontends, i);
> - if (fe == NULL) {
> - printk(KERN_ERR "%s() failed to get frontend(%d)\n",
> + for (i = 1; i <= core->board.num_frontends; i++) {
> + fe = videobuf_dvb_get_frontend(&core->dvbdev->frontends, i);
> + if (fe == NULL) {
> + printk(KERN_ERR "%s() failed to get frontend(%d)\n",
> __func__, i);
> - goto fail_probe;
> - }
> - videobuf_queue_sg_init(&fe->dvb.dvbq, &dvb_qops,
> + goto fail_probe;
> + }
> + videobuf_queue_sg_init(&fe->dvb.dvbq, &dvb_qops,
> &dev->pci->dev, &dev->slock,
> V4L2_BUF_TYPE_VIDEO_CAPTURE,
> V4L2_FIELD_TOP,
> sizeof(struct cx88_buffer),
> dev);
> - /* init struct videobuf_dvb */
> - fe->dvb.name = dev->core->name;
> - }
> - } else {
> - /* no frontends allocated */
> - printk(KERN_ERR "%s/2 .num_frontends should be non-zero\n",
> - core->name);
> - goto fail_core;
> + /* init struct videobuf_dvb */
> + fe->dvb.name = dev->core->name;
> }
> +
> err = dvb_register(dev);
> if (err)
> /* frontends/adapter de-allocated in dvb_register */
>
>
>
> --
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