Hi Udo, On 08/07/2014 04:49 PM, Udo van den Heuvel wrote: > On 2014-08-04 11:17, Laurent Pinchart wrote: >> (CC'ing Hans de Goede, the pwc maintainer, and the linux-media mailing list)
Thanks for the bug report. I've been looking into this, and there seem to be 2 problems: 1: xhci_hcd 0000:02:00.0: ERROR: unexpected command completion code 0x11. This seems to be what is causing things to not work with a usb-3 port for you. Might be fixed by this commit: https://git.kernel.org/cgit/linux/kernel/git/gregkh/usb.git/commit/drivers/usb/host?h=usb-next&id=3213b151387df0b95f4eada104f68eb1c1409cb3 Can you please do "lspci -nn", and then copy and paste the output here, so that we can see what sort of xhci controller you've (and try to reproduce the problem). 2: The triggering of a WARN_ON in __vb2_queue_cancel() when called on streamoff. I've been looking at the code and I cannot figure out why this is triggering I'm afraid. Regards, Hans >> >> On Saturday 02 August 2014 15:10:01 Udo van den Heuvel wrote: >>> Hello, >>> >>> I moved a PWC webcam to a USB3 port, and this happened: > > I get similar stuff when trying to use a Logitech C615 cam. > See attachment for full dmesg of errors but excerpt below: > > [80346.835015] xhci_hcd 0000:02:00.0: ERROR: unexpected command > completion code 0x11. > [80346.835027] usb 6-2: Not enough bandwidth for altsetting 11 > [80346.835137] ------------[ cut here ]------------ > [80346.835155] WARNING: CPU: 3 PID: 20594 at > drivers/media/v4l2-core/videobuf2-core.c:2011 > __vb2_queue_cancel+0x102/0x170 [videobuf2_core]() > [80346.835158] Modules linked in: uvcvideo cdc_acm bnep bluetooth fuse > edac_core cpufreq_userspace ipt_REJECT nf_conntrack_netbios_ns > nf_conntrack_broadcast iptable_filter ip6t_REJECT ipt_MASQUERADE > xt_tcpudp nf_conntrack_ipv6 iptable_nat nf_defrag_ipv6 nf_conntrack_ipv4 > nf_defrag_ipv4 nf_nat_ipv4 nf_nat xt_conntrack nf_conntrack ip_tables > ip6table_filter ip6_tables x_tables eeprom it87 hwmon_vid ext2 > snd_usb_audio snd_usbmidi_lib snd_hwdep snd_rawmidi ppdev pwc > videobuf2_vmalloc videobuf2_memops kvm_amd kvm v4l2_common > videobuf2_core snd_hda_codec_realtek snd_hda_codec_generic videodev > snd_hda_intel snd_hda_controller cp210x snd_hda_codec usbserial snd_seq > snd_seq_device microcode snd_pcm parport_serial parport_pc parport > snd_timer k10temp snd evdev i2c_piix4 button acpi_cpufreq nfsd > auth_rpcgss oid_registry > [80346.835218] nfs_acl lockd sunrpc binfmt_misc autofs4 hid_generic > usbhid ohci_pci ehci_pci ehci_hcd ohci_hcd radeon sr_mod cdrom fbcon > bitblit cfbfillrect softcursor cfbimgblt cfbcopyarea font i2c_algo_bit > xhci_hcd backlight drm_kms_helper ttm drm fb fbdev > [80346.835250] CPU: 3 PID: 20594 Comm: skype Tainted: G W > 3.15.8 #6 > [80346.835254] Hardware name: Gigabyte Technology Co., Ltd. To be filled > by O.E.M./F2A85X-UP4, BIOS F5a 04/30/2013 > [80346.835257] 0000000000000000 0000000079d580f4 ffffffff814f2373 > 0000000000000000 > [80346.835262] ffffffff81069fe1 0000000000000000 ffff88040ec532e8 > 0000000000000000 > [80346.835267] ffff88040ec530d8 ffff8803f0c46f00 ffffffffa041d832 > ffff88040ec530d8 > [80346.835272] Call Trace: > [80346.835283] [<ffffffff814f2373>] ? dump_stack+0x4a/0x75 > [80346.835289] [<ffffffff81069fe1>] ? warn_slowpath_common+0x81/0xb0 > [80346.835299] [<ffffffffa041d832>] ? __vb2_queue_cancel+0x102/0x170 > [videobuf2_core] > [80346.835307] [<ffffffffa041f53d>] ? vb2_internal_streamoff+0x1d/0x50 > [videobuf2_core] > [80346.835314] [<ffffffffa06140d5>] ? uvc_queue_enable+0x75/0xb0 [uvcvideo] > [80346.835321] [<ffffffffa0619091>] ? uvc_video_enable+0x141/0x1a0 > [uvcvideo] > [80346.835327] [<ffffffffa0615e1f>] ? uvc_v4l2_do_ioctl+0xd6f/0x1580 > [uvcvideo] > [80346.835339] [<ffffffffa0448bc0>] ? video_usercopy+0x1f0/0x490 [videodev] > [80346.835345] [<ffffffffa06150b0>] ? > uvc_v4l2_set_streamparm.isra.12+0x1c0/0x1c0 [uvcvideo] > [80346.835352] [<ffffffff81091d9f>] ? preempt_count_add+0x3f/0x90 > [80346.835356] [<ffffffff814f73ee>] ? _raw_spin_lock+0xe/0x30 > [80346.835360] [<ffffffff814f748d>] ? _raw_spin_unlock+0xd/0x30 > [80346.835367] [<ffffffff8110f77e>] ? __pte_alloc+0xce/0x170 > [80346.835376] [<ffffffffa04447df>] ? v4l2_ioctl+0x11f/0x160 [videodev] > [80346.835386] [<ffffffffa04527b6>] ? do_video_ioctl+0x246/0x1330 > [videodev] > [80346.835392] [<ffffffff8111999a>] ? mmap_region+0x15a/0x5a0 > [80346.835402] [<ffffffffa0453922>] ? v4l2_compat_ioctl32+0x82/0xb8 > [videodev] > [80346.835408] [<ffffffff81186182>] ? compat_SyS_ioctl+0x132/0x1120 > [80346.835414] [<ffffffff81105833>] ? vm_mmap_pgoff+0xe3/0x120 > [80346.835421] [<ffffffff814f97c5>] ? cstar_dispatch+0x7/0x1a > [80346.835424] ---[ end trace 44e3d272b6c91a71 ]--- > [80346.835427] ------------[ cut here ]------------ > > > What is wrong here? > > Kind regards, > Udo > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
