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linux/drivers/media/usb
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Mauro Carvalho Chehab a3b60209e7 [media] em28xx: fix oops at em28xx_dvb_bus_ctrl() 
em28xx is oopsing with some DVB devices:

[10856.061884] general protection fault: 0000 [#1] SMP
[10856.067041] Modules linked in: rc_hauppauge em28xx_rc xc5000 drxk em28xx_dvb dvb_core em28xx videobuf2_vmalloc videobuf2_memops videobuf2_core rc_pixelview_new tuner_xc2028 tuner cx8800 cx88xx tveeprom btcx_risc videobuf_dma_sg videobuf_core rc_core v4l2_common videodev ebtable_nat ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_CHECKSUM be2iscsi iscsi_boot_sysfs iptable_mangle bnx2i cnic uio cxgb4i cxgb4 tun bridge cxgb3i cxgb3 stp ip6t_REJECT mdio libcxgbi nf_conntrack_ipv6 llc nf_defrag_ipv6 ib_iser rdma_cm ib_addr xt_conntrack iw_cm ib_cm ib_sa nf_conntrack ib_mad ib_core bnep bluetooth iscsi_tcp libiscsi_tcp ip6table_filter libiscsi ip6_tables scsi_transport_iscsi xfs libcrc32c snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm tg3 snd_page_alloc snd_timer
[10856.139176]  snd ptp iTCO_wdt soundcore pps_core iTCO_vendor_support lpc_ich mfd_core coretemp nfsd hp_wmi crc32c_intel microcode serio_raw rfkill sparse_keymap nfs_acl lockd sunrpc kvm_intel kvm uinput binfmt_misc firewire_ohci nouveau mxm_wmi i2c_algo_bit drm_kms_helper firewire_core crc_itu_t ttm drm i2c_core wmi [last unloaded: dib0070]
[10856.168969] CPU 1
[10856.170799] Pid: 13606, comm: dvbv5-zap Not tainted 3.9.0-rc5+ #26 Hewlett-Packard HP Z400 Workstation/0AE4h
[10856.181187] RIP: 0010:[<ffffffffa0459e47>]  [<ffffffffa0459e47>] em28xx_write_regs_req+0x37/0x1c0 [em28xx]
[10856.191028] RSP: 0018:ffff880118401a58  EFLAGS: 00010282
[10856.196533] RAX: 00020000012d0000 RBX: ffff88010804aec8 RCX: ffff880118401b14
[10856.203852] RDX: 0000000000000048 RSI: 0000000000000000 RDI: ffff88010804aec8
[10856.211174] RBP: ffff880118401ac8 R08: 0000000000000001 R09: 0000000000000000
[10856.218496] R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000048
[10856.226026] R13: ffff880118401b14 R14: ffff88011752b258 R15: ffff88011752b258
[10856.233352] FS:  00007f26636d2740(0000) GS:ffff88011fc20000(0000) knlGS:0000000000000000
[10856.241626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10856.247565] CR2: 00007f2663716e20 CR3: 00000000c7eb1000 CR4: 00000000000007e0
[10856.254889] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[10856.262215] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[10856.269542] Process dvbv5-zap (pid: 13606, threadinfo ffff880118400000, task ffff8800cd625d40)
[10856.278340] Stack:
[10856.280564]  ffff88011ffe8de8 0000000000000002 0000000000000000 ffff88011ffe9b00
[10856.288191]  ffff880118401b14 00ff88011ffe9b08 ffff880100000048 ffffffff8112a52a
[10856.295893]  0000000000000001 ffff88010804aec8 0000000000000048 ffff880118401b14
[10856.303521] Call Trace:
[10856.306182]  [<ffffffff8112a52a>] ? __alloc_pages_nodemask+0x15a/0x960
[10856.312912]  [<ffffffffa045a002>] em28xx_write_regs+0x32/0xa0 [em28xx]
[10856.319638]  [<ffffffffa045a221>] em28xx_write_reg+0x21/0x30 [em28xx]
[10856.326279]  [<ffffffffa045a2cc>] em28xx_gpio_set+0x9c/0x100 [em28xx]
[10856.332919]  [<ffffffffa045a3ac>] em28xx_set_mode+0x7c/0x80 [em28xx]
[10856.339472]  [<ffffffffa03ef032>] em28xx_dvb_bus_ctrl+0x32/0x40 [em28xx_dvb]

This is caused by commit c7a45e5b4f,
that added support for two I2C buses. A partial fix was applied
at 3de09fbbfa, but it doesn't cover
all cases, as the DVB core fills fe->dvb->priv with adapter->priv.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
 		2013-04-28 12:39:41 -03:00
..
au0828 [media] au0828: improve firmware loading & locking 2013-03-25 15:10:37 -03:00
b2c2 [media] Kconfig: Fix b2c2 common code selection 2012-08-21 08:38:31 -03:00
cpia2 [media] v4l: Tell user space we're using monotonic timestamps 2012-12-21 11:20:51 -02:00
cx231xx [media] v4l2: add const to argument of write-only s_register ioctl 2013-03-24 08:47:01 -03:00
dvb-usb [media] dib7090p: improve the support of the dib7090 and dib7790 2013-04-22 17:15:52 -03:00
dvb-usb-v2 Merge branch 'topic/r820t' into patchwork 2013-04-25 10:26:21 -03:00
em28xx [media] em28xx: fix oops at em28xx_dvb_bus_ctrl() 2013-04-28 12:39:41 -03:00
gspca [media] gspca: remove obsolete Kconfig macros 2013-03-29 08:19:26 -03:00
hdpvr [media] hdpvr: allow g/s/enum/querystd when in legacy mode 2013-04-14 20:02:15 -03:00
pvrusb2 [media] v4l2: add const to argument of write-only s_register ioctl 2013-03-24 08:47:01 -03:00
pwc [media] vb2: Add support for non monotonic timestamps 2013-03-05 14:53:05 -03:00
s2255 [media] v4l2: pass std by value to the write-only s_std ioctl 2013-03-24 06:47:00 -03:00
siano [media] siano: remove the remaining CamelCase compliants 2013-03-21 10:03:45 -03:00
sn9c102 [media] sn9c102: Replace memcpy with struct assignment 2012-12-27 18:44:46 -02:00
stk1160 [media] stk1160: remove V4L2_CHIP_MATCH_AC97 placeholder 2013-03-25 09:32:21 -03:00
stkwebcam [media] stk-webcam: implement support for count == 0 when calling REQBUFS 2013-03-05 14:44:17 -03:00
tlg2300 [media] v4l2: pass std by value to the write-only s_std ioctl 2013-03-24 06:47:00 -03:00
tm6000 [media] v4l2: pass std by value to the write-only s_std ioctl 2013-03-24 06:47:00 -03:00
ttusb-budget [media] demux.h: Remove duplicated enum 2013-04-08 06:53:15 -03:00
ttusb-dec [media] demux.h: Remove duplicated enum 2013-04-08 06:53:15 -03:00
usbvision [media] v4l2: add const to argument of write-only s_register ioctl 2013-03-24 08:47:01 -03:00
uvc [media] uvcvideo: Return -EINVAL when setting a menu control to an invalid value 2013-03-28 18:37:11 -03:00
zr364xx [media] v4l: Convert drivers to use monotonic timestamps 2012-12-21 10:56:43 -02:00
Kconfig [media] au0828: remove forced dependency of VIDEO_AU0828 on VIDEO_V4L2 2012-12-17 14:31:26 -02:00
Makefile [media] Fix some Makefile rules 2012-08-16 19:55:03 -03:00