Another issue is I can't unload the module any longer. Dec 24 17:50:39 DVB kernel: [ 7547.269390] ------------[ cut here ]------------ Dec 24 17:50:39 DVB kernel: [ 7547.269397] WARNING: CPU: 7 PID: 10618 at kernel/irq/manage.c:1311 __free_irq+0x9f/0x1f0() Dec 24 17:50:39 DVB kernel: [ 7547.269398] Trying to free already-free IRQ 0 Dec 24 17:50:39 DVB kernel: [ 7547.269398] Modules linked in: cx88_vp3054_i2c cx8802(-) cx88xx videobuf2_core videobuf2_dma_sg videobuf2_memops tveeprom v4l2_common videodev stb6100 stv090x dvb_usb_tbsqbox2ci dvb_usb dvb_core rc_core nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc snd_hda_codec_hdmi mxm_wmi snd_hda_codec_via snd_hda_codec_generic snd_usb_audio x86_pkg_temp_thermal bnep snd_usbmidi_lib rfcomm snd_hda_intel kvm_intel snd_hda_controller bluetooth snd_hda_codec kvm snd_hwdep snd_pcm ghash_clmulni_intel snd_seq_midi aesni_intel snd_seq_midi_event aes_x86_64 snd_rawmidi lrw i915 gf128mul glue_helper ablk_helper cryptd snd_seq snd_seq_device snd_timer drm_kms_helper snd drm microcode soundcore i2c_algo_bit shpchp lpc_ich serio_raw wmi tpm_infineon tpm_tis video nfsd mac_hid auth_rpcgss oid_registry nfs_acl parport_pc ppdev nfs lockd grace it87 binfmt_misc sunrpc hwmon_vid coretemp fscache lp parport nls_iso8859_1 hid_generic usbhid hid psmouse ahci alx libahci mdio [last unloaded: videobuf2_dvb] Dec 24 17:50:39 DVB kernel: [ 7547.269434] CPU: 7 PID: 10618 Comm: modprobe Not tainted 3.19.0-rc1+ #2 Dec 24 17:50:39 DVB kernel: [ 7547.269434] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77X-UD3H, BIOS F20e 01/06/2014 Dec 24 17:50:39 DVB kernel: [ 7547.269435] ffffffff81a72a51 ffff8803a382bcb8 ffffffff8174947e 0000000000000007 Dec 24 17:50:39 DVB kernel: [ 7547.269437] ffff8803a382bd08 ffff8803a382bcf8 ffffffff8105899a ffff8803a382bcd8 Dec 24 17:50:39 DVB kernel: [ 7547.269438] 0000000000000000 0000000000000000 ffff88040e80a6a4 ffff88040e80a600 Dec 24 17:50:39 DVB kernel: [ 7547.269439] Call Trace: Dec 24 17:50:39 DVB kernel: [ 7547.269444] [<ffffffff8174947e>] dump_stack+0x45/0x57 Dec 24 17:50:39 DVB kernel: [ 7547.269446] [<ffffffff8105899a>] warn_slowpath_common+0x8a/0xc0 Dec 24 17:50:39 DVB kernel: [ 7547.269447] [<ffffffff81058a16>] warn_slowpath_fmt+0x46/0x50 Dec 24 17:50:39 DVB kernel: [ 7547.269450] [<ffffffff810af52f>] __free_irq+0x9f/0x1f0 Dec 24 17:50:39 DVB kernel: [ 7547.269451] [<ffffffff810af71d>] free_irq+0x4d/0xd0 Dec 24 17:50:39 DVB kernel: [ 7547.269454] [<ffffffffa06c0d96>] cx8802_remove+0xa6/0x1c0 [cx8802] Dec 24 17:50:39 DVB kernel: [ 7547.269456] [<ffffffff813c0f1f>] pci_device_remove+0x3f/0xc0 Dec 24 17:50:39 DVB kernel: [ 7547.269459] [<ffffffff81498fef>] __device_release_driver+0x7f/0xf0 Dec 24 17:50:39 DVB kernel: [ 7547.269461] [<ffffffff81499a08>] driver_detach+0xb8/0xc0 Dec 24 17:50:39 DVB kernel: [ 7547.269462] [<ffffffff81498c69>] bus_remove_driver+0x59/0xe0 Dec 24 17:50:39 DVB kernel: [ 7547.269464] [<ffffffff8149a1d0>] driver_unregister+0x30/0x70 Dec 24 17:50:39 DVB kernel: [ 7547.269465] [<ffffffff813c0895>] pci_unregister_driver+0x25/0x90 Dec 24 17:50:39 DVB kernel: [ 7547.269466] [<ffffffffa06c18f5>] cx8802_pci_driver_exit+0x10/0x71b [cx8802] Dec 24 17:50:39 DVB kernel: [ 7547.269469] [<ffffffff810d708f>] SyS_delete_module+0x1af/0x250 Dec 24 17:50:39 DVB kernel: [ 7547.269471] [<ffffffff810030e1>] ? do_notify_resume+0x61/0x90 Dec 24 17:50:39 DVB kernel: [ 7547.269473] [<ffffffff81750056>] system_call_fastpath+0x16/0x1b Dec 24 17:50:39 DVB kernel: [ 7547.269474] ---[ end trace 935d21431b629f9c ]--- It shows as a warning but its more than that. It locks my computer up so badly even the reset button doesnt work. Even if I do this in a VM (qemu) it will lock up the host. Chris Lee -- 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