Hi Lorenz, On 11/09/2013 05:18 PM, Lorenz Röhrl wrote: > Hi, > > i'm having problems loading the bttv-module for my bt878 based DVB-T > card: my system just freezes. Magic-Syskeys also won't work then. > With kernel 3.9.0 this worked just fine. Versions 3.10, 3.11 and 3.12 > won't work. > > Last messages on screen with 3.12 upon booting/loading the module is: > http://abload.de/img/bttv_freezeqxdn2.png > > With kernel 3.9 i get an additional line on module loading and the > device works fine: > [ 1.895037] bttv: 0: add subdevice "dvb0" > > I traced the problem, it dies somewhere in v4l2_ctrl_handler_setup on > line 4169 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/media/pci/bt8xx/bttv-driver.c#n4169 Can you try this patch? I'm not 100% but I think this might be the cause of the problem. diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c index c6532de..4f0aaa5 100644 --- a/drivers/media/pci/bt8xx/bttv-driver.c +++ b/drivers/media/pci/bt8xx/bttv-driver.c @@ -4182,7 +4182,8 @@ static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id) } btv->std = V4L2_STD_PAL; init_irqreg(btv); - v4l2_ctrl_handler_setup(hdl); + if (!bttv_tvcards[btv->c.type].no_video) + v4l2_ctrl_handler_setup(hdl); if (hdl->error) { result = hdl->error; goto fail2; Regards, Hans > > lspci output from kernel 3.9: > [...] > 04:01.0 Multimedia video controller: Brooktree Corporation Bt878 Video > Capture (rev 11) > Subsystem: Twinhan Technology Co. Ltd VisionPlus DVB card > Flags: bus master, medium devsel, latency 32, IRQ 16 > Memory at f0401000 (32-bit, prefetchable) [size=4K] > Capabilities: [44] Vital Product Data > Capabilities: [4c] Power Management version 2 > Kernel driver in use: bttv > Kernel modules: bttv > > 04:01.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture > (rev 11) > Subsystem: Twinhan Technology Co. Ltd VisionPlus DVB Card > Flags: bus master, medium devsel, latency 32, IRQ 16 > Memory at f0400000 (32-bit, prefetchable) [size=4K] > Capabilities: [44] Vital Product Data > Capabilities: [4c] Power Management version 2 > Kernel driver in use: bt878 > Kernel modules: bt878 > > > > Please CC me as i'm not subscribed to the list. > > Thanks! > > - Lorenz > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
