1. 21 Sep, 2014 14 commits
    • Hans Verkuil's avatar
      [media] DocBook media: improve the poll() documentation · 91235537
      Hans Verkuil authored
      The poll documentation was incomplete: document how events (POLLPRI)
      are handled and fix the documentation of what poll does for display devices
      and streaming I/O.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      91235537
    • Hans Verkuil's avatar
      [media] DocBook media: fix the poll() 'no QBUF' documentation · acf92046
      Hans Verkuil authored
      Clarify what poll() returns if STREAMON was called but not QBUF.
      Make explicit the different behavior for this scenario for
      capture and output devices.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      acf92046
    • Hans Verkuil's avatar
      [media] vb2: fix VBI/poll regression · 58d75f4b
      Hans Verkuil authored
      The recent conversion of saa7134 to vb2 unconvered a poll() bug that
      broke the teletext applications alevt and mtt. These applications
      expect that calling poll() without having called VIDIOC_STREAMON will
      cause poll() to return POLLERR. That did not happen in vb2.
      
      This patch fixes that behavior. It also fixes what should happen when
      poll() is called when STREAMON is called but no buffers have been
      queued. In that case poll() will also return POLLERR, but only for
      capture queues since output queues will always return POLLOUT
      anyway in that situation.
      
      This brings the vb2 behavior in line with the old videobuf behavior.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      58d75f4b
    • Hans Verkuil's avatar
      [media] cx2341x: fix kernel oops · 50394e73
      Hans Verkuil authored
      The v4l2_ctrl_config struct must be zeroed before passing it to
      v4l2_ctrl_new_custom(). This was always wrong, but with the recent
      v4l2-ctrls.c changes this is now much more likely to lead to a
      kernel bug.
      
      This is the only place where this struct wasn't initialized properly.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Reported-by: default avatarPridvorov Andrey <ua0lnj@bk.ru>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      50394e73
    • Hans Verkuil's avatar
      [media] cx24123: fix kernel oops due to missing parent pointer · fdc6b388
      Hans Verkuil authored
      When I try to set the TV standard to e.g. PAL on my Hauppauge WinTV-HVR3000 I get
      the following oops:
      
       9464.262345] CX24123: detected CX24123
      [ 9464.262526] BUG: unable to handle kernel NULL pointer dereference at 0000000000000230
      [ 9464.262555] IP: [<ffffffff816676b5>] acpi_i2c_install_space_handler+0x15/0xc0
      [ 9464.262576] PGD 0
      [ 9464.262584] Oops: 0000 [#1] PREEMPT SMP
      [ 9464.262597] Modules linked in: cx24123 cx22702 cx88_dvb(+) videobuf_dvb cx88_vp3054_i2c cx88_blackbird cx8802 ir_lirc_codec ir_xmp_decoder ir_sanyo_decoder ir_jvc_decoder ir_mce_kbd_decoder ir_sharp_decoder lirc_dev ir_sony_decoder ir_rc6_decoder ir_nec_decoder ir_rc5_decoder rc_hauppauge wm8775 tuner_simple tuner_types tda9887 cx8800 cx88xx btcx_risc videobuf_dma_sg videobuf_core mt2131 s5h1409 tda8290 tuner cx25840 cx23885 altera_ci tda18271 altera_stapl videobuf2_dvb tveeprom cx2341x videobuf2_dma_sg dvb_core rc_core videobuf2_memops videobuf2_core v4l2_common videodev media nouveau x86_pkg_temp_thermal cfbfillrect cfbimgblt cfbcopyarea ttm drm_kms_helper processor button isci
      [ 9464.262786] CPU: 2 PID: 2417 Comm: modprobe Not tainted 3.17.0-rc1-telek #322
      [ 9464.262796] Hardware name: ASUSTeK COMPUTER INC. Z9PE-D8 WS/Z9PE-D8 WS, BIOS 5404 02/10/2014
      [ 9464.262807] task: ffff881097959ad0 ti: ffff88109967c000 task.ti: ffff88109967c000
      [ 9464.262817] RIP: 0010:[<ffffffff816676b5>]  [<ffffffff816676b5>] acpi_i2c_install_space_handler+0x15/0xc0
      [ 9464.262834] RSP: 0018:ffff88109967fbd8  EFLAGS: 00010246
      [ 9464.262843] RAX: 0000000000000000 RBX: ffff880892a89540 RCX: 0000000000000000
      [ 9464.262853] RDX: 0000000080000001 RSI: ffff880892e75870 RDI: ffff880892a89540
      [ 9464.262862] RBP: ffff88109967fbf8 R08: ffff881099b2ccc0 R09: ffff880891efa088
      [ 9464.262872] R10: 0000000000000000 R11: 0000000000000022 R12: 0000000000000000
      [ 9464.262883] R13: ffff880892a895b0 R14: 00000000ffffffed R15: ffff88089b48f800
      [ 9464.262893] FS:  00007fe42b6d7700(0000) GS:ffff88089fc40000(0000) knlGS:0000000000000000
      [ 9464.262904] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [ 9464.262912] CR2: 0000000000000230 CR3: 0000001094078000 CR4: 00000000000407e0
      [ 9464.262922] Stack:
      [ 9464.262927]  ffff880892a89540 0000000000000000 ffff880892a895b0 ffff88109a155a80
      [ 9464.262944]  ffff88109967fc20 ffffffff81666a36 0000000000000020 ffff880892a89540
      [ 9464.262960]  ffffffffa01c8d40 ffff88109967fc40 ffffffff81666c67 ffff880892a89000
      [ 9464.262977] Call Trace:
      [ 9464.262987]  [<ffffffff81666a36>] i2c_register_adapter+0x166/0x340
      [ 9464.262998]  [<ffffffff81666c67>] i2c_add_adapter+0x57/0x60
      [ 9464.263011]  [<ffffffffa01e2c58>] cx24123_attach+0x108/0x1ba [cx24123]
      [ 9464.263025]  [<ffffffffa01c5a76>] dvb_register+0x404/0x245b [cx88_dvb]
      [ 9464.263039]  [<ffffffffa0059183>] ? videobuf_queue_core_init+0xe3/0x140 [videobuf_core]
      [ 9464.263052]  [<ffffffffa01c54b1>] cx8802_dvb_probe+0x1e1/0x261 [cx88_dvb]
      [ 9464.263066]  [<ffffffffa01a3b00>] cx8802_register_driver+0x190/0x20d [cx8802]
      [ 9464.263077]  [<ffffffffa01cc000>] ? 0xffffffffa01cc000
      [ 9464.263089]  [<ffffffffa01cc025>] dvb_init+0x25/0x27 [cx88_dvb]
      [ 9464.263101]  [<ffffffff810002c4>] do_one_initcall+0x84/0x1c0
      [ 9464.263113]  [<ffffffff811893fa>] ? __vunmap+0x9a/0x100
      [ 9464.263125]  [<ffffffff81122a66>] load_module+0x1216/0x1790
      [ 9464.263134]  [<ffffffff8111ff70>] ? __symbol_put+0x70/0x70
      [ 9464.263145]  [<ffffffff811aa8cc>] ? vfs_read+0x11c/0x170
      [ 9464.263156]  [<ffffffff811201d9>] ? copy_module_from_fd.isra.53+0x119/0x170
      [ 9464.263168]  [<ffffffff81123116>] SyS_finit_module+0x76/0x80
      [ 9464.263181]  [<ffffffff818d19e9>] system_call_fastpath+0x16/0x1b
      [ 9464.263190] Code: 81 31 c0 e8 2e f6 e8 ff 48 83 c4 08 5b 5d eb de 66 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 54 53 41 be ed ff ff ff 48 8b 47 70 <48> 8b 80 30 02 00 00 48 85 c0 74 58 4c 8b 68 08 4d 85 ed 74 4f
      [ 9464.263347] RIP  [<ffffffff816676b5>] acpi_i2c_install_space_handler+0x15/0xc0
      [ 9464.263361]  RSP <ffff88109967fbd8>
      [ 9464.263367] CR2: 0000000000000230
      [ 9464.266919] ---[ end trace 57fd490bdb72e733 ]---
      
      I traced this to a NULL i2c_adapter parent pointer when cx24123 creates its own
      i2c adapter. The acpi_i2c_install_space_handler function appeared in 3.17, so
      that's probably why this hasn't been seen before.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      fdc6b388
    • Hans Verkuil's avatar
      [media] adv7604: fix inverted condition · 77639ff2
      Hans Verkuil authored
      The log_status function should show HDMI information, but the test checking for
      an HDMI input was inverted. Fix this.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Cc: stable@vger.kernel.org      # for v3.12 and up
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      77639ff2
    • Randy Dunlap's avatar
      [media] media/radio: fix radio-miropcm20.c build with io.h header file · 7102076c
      Randy Dunlap authored
      Fix build errors in radio-miropcm20.c due to missing header file:
      
      drivers/media/radio/radio-miropcm20.c: In function 'rds_waitread':
      drivers/media/radio/radio-miropcm20.c:90:3: error: implicit declaration of function 'inb' [-Werror=implicit-function-declaration]
      drivers/media/radio/radio-miropcm20.c: In function 'rds_rawwrite':
      drivers/media/radio/radio-miropcm20.c:106:3: error: implicit declaration of function 'outb' [-Werror=implicit-function-declaration]
      Reported-by: default avatarJim Davis <jim.epost@gmail.com>
      Signed-off-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      7102076c
    • Zhaowei Yuan's avatar
      [media] vb2: fix plane index sanity check in vb2_plane_cookie() · a9ae4692
      Zhaowei Yuan authored
      It's also invalid when plane_no is equal to vb->num_planes
      Signed-off-by: default avatarZhaowei Yuan <zhaowei.yuan@samsung.com>
      Cc: stable@vger.kernel.org      # for v3.7 and up
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      a9ae4692
    • Hans Verkuil's avatar
      [media] DocBook media: update version number and V4L2 changes · 983ed755
      Hans Verkuil authored
      Note: the revision text for the v4l2_pix_format change from Laurent
      erroneously mentioned 3.16 when it only got merged for 3.17. Fixed
      that as well.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      983ed755
    • Hans Verkuil's avatar
      [media] DocBook media: fix fieldname in struct v4l2_subdev_selection · 1b88db2f
      Hans Verkuil authored
      Field 'rect' is really named 'r'.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      1b88db2f
    • Hans Verkuil's avatar
      [media] vb2: fix vb2 state check when start_streaming fails · bf3593d9
      Hans Verkuil authored
      Commit bd994ddb (vb2: Fix stream start and
      buffer completion race) broke the buffer state check in vb2_buffer_done.
      
      So accept all three possible states there since I can no longer tell the
      difference between vb2_buffer_done called from start_streaming or from
      elsewhere.
      
      Instead add a WARN_ON at the end of start_streaming that will check whether
      any buffers were added to the done list, since that implies that the wrong
      state was used as well.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
      Cc: stable@vger.kernel.org      # for v3.15 and up
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      bf3593d9
    • Hans Verkuil's avatar
      [media] videobuf2-core.h: fix comment · 44e8e69d
      Hans Verkuil authored
      The comment for start_streaming that tells the developer with which vb2 state
      buffers should be returned to vb2 gave the wrong state. Very confusing.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      44e8e69d
    • Hans Verkuil's avatar
      [media] videobuf2-core: add comments before the WARN_ON · 23cd08c8
      Hans Verkuil authored
      Recently WARN_ON() calls have been added to warn if the driver is not
      properly returning buffers to vb2 in start_streaming (if it fails) or
      stop_streaming(). Add comments before those WARN_ON calls that refer
      to the videobuf2-core.h header that explains what drivers are supposed
      to do in these situations. That should help point developers in the
      right direction if they see these warnings.
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Acked-by: default avatarPawel Osciak <pawel@osciak.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      23cd08c8
    • Hans Verkuil's avatar
      [media] videobuf2-dma-sg: fix for wrong GFP mask to sg_alloc_table_from_pages · 47bc59c5
      Hans Verkuil authored
      sg_alloc_table_from_pages() only allocates a sg_table, so it should just use
      GFP_KERNEL, not gfp_flags. If gfp_flags contains __GFP_DMA32 then mm/sl[au]b.c
      will call BUG_ON:
      
      [  358.027515] ------------[ cut here ]------------
      [  358.027546] kernel BUG at mm/slub.c:1416!
      [  358.027558] invalid opcode: 0000 [#1] PREEMPT SMP
      [  358.027576] Modules linked in: mt2131 s5h1409 tda8290 tuner cx25840 cx23885 btcx_risc altera_ci tda18271 altera_stapl videobuf2_dvb tveeprom cx2341x videobuf2_dma_sg dvb_core rc_core videobuf2_memops videobuf2_core nouveau zr36067 videocodec v4l2_common videodev media x86_pkg_temp_thermal cfbfillrect cfbimgblt cfbcopyarea ttm drm_kms_helper processor button isci
      [  358.027712] CPU: 19 PID: 3654 Comm: cat Not tainted 3.16.0-rc6-telek #167
      [  358.027723] Hardware name: ASUSTeK COMPUTER INC. Z9PE-D8 WS/Z9PE-D8 WS, BIOS 5404 02/10/2014
      [  358.027741] task: ffff880897c7d960 ti: ffff88089b4d4000 task.ti: ffff88089b4d4000
      [  358.027753] RIP: 0010:[<ffffffff81196040>]  [<ffffffff81196040>] new_slab+0x280/0x320
      [  358.027776] RSP: 0018:ffff88089b4d7ae8  EFLAGS: 00010002
      [  358.027787] RAX: ffff880897c7d960 RBX: 0000000000000000 RCX: ffff88089b4d7b50
      [  358.027798] RDX: 00000000ffffffff RSI: 0000000000000004 RDI: ffff88089f803b00
      [  358.027809] RBP: ffff88089b4d7bb8 R08: 0000000000000000 R09: 0000000100400040
      [  358.027821] R10: 0000160000000000 R11: ffff88109bc02c40 R12: 0000000000000001
      [  358.027832] R13: ffff88089f8000c0 R14: ffff88089f803b00 R15: ffff8810bfcf4be0
      [  358.027845] FS:  00007f83fe5c0700(0000) GS:ffff8810bfce0000(0000) knlGS:0000000000000000
      [  358.027858] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  358.027868] CR2: 0000000001dfd568 CR3: 0000001097d5a000 CR4: 00000000000407e0
      [  358.027878] Stack:
      [  358.027885]  ffffffff81198860 ffff8810bfcf4be0 ffff880897c7d960 0000000000001b00
      [  358.027905]  ffff880897c7d960 0000000000000000 ffff8810bfcf4bf0 0000000000000000
      [  358.027924]  0000000000000000 0000000100000100 ffffffff813ef84a 00000004ffffffff
      [  358.027944] Call Trace:
      [  358.027956]  [<ffffffff81198860>] ? __slab_alloc+0x400/0x4e0
      [  358.027973]  [<ffffffff813ef84a>] ? sg_kmalloc+0x1a/0x30
      [  358.027985]  [<ffffffff81198f17>] __kmalloc+0x127/0x150
      [  358.027997]  [<ffffffff813ef84a>] ? sg_kmalloc+0x1a/0x30
      [  358.028009]  [<ffffffff813ef84a>] sg_kmalloc+0x1a/0x30
      [  358.028023]  [<ffffffff813eff84>] __sg_alloc_table+0x74/0x180
      [  358.028035]  [<ffffffff813ef830>] ? sg_kfree+0x20/0x20
      [  358.028048]  [<ffffffff813f00af>] sg_alloc_table+0x1f/0x60
      [  358.028061]  [<ffffffff813f0174>] sg_alloc_table_from_pages+0x84/0x1f0
      [  358.028077]  [<ffffffffa007c3f9>] vb2_dma_sg_alloc+0x159/0x230 [videobuf2_dma_sg]
      [  358.028095]  [<ffffffffa003d55a>] __vb2_queue_alloc+0x10a/0x680 [videobuf2_core]
      [  358.028113]  [<ffffffffa003e110>] __reqbufs.isra.14+0x220/0x3e0 [videobuf2_core]
      [  358.028130]  [<ffffffffa003e79d>] __vb2_init_fileio+0xbd/0x380 [videobuf2_core]
      [  358.028147]  [<ffffffffa003f563>] __vb2_perform_fileio+0x5b3/0x6e0 [videobuf2_core]
      [  358.028164]  [<ffffffffa003f871>] vb2_fop_read+0xb1/0x100 [videobuf2_core]
      [  358.028184]  [<ffffffffa06dd2e5>] v4l2_read+0x65/0xb0 [videodev]
      [  358.028198]  [<ffffffff811a243f>] vfs_read+0x8f/0x170
      [  358.028210]  [<ffffffff811a30a1>] SyS_read+0x41/0xb0
      [  358.028224]  [<ffffffff818f02e9>] system_call_fastpath+0x16/0x1b
      [  358.028234] Code: 66 90 e9 dc fd ff ff 0f 1f 40 00 41 8b 4d 68 e9 d5 fe ff ff 0f 1f 80 00 00 00 00 f0 41 80 4d 00 40 e9 03 ff ff ff 0f 1f 44 00 00 <0f> 0b 66 0f 1f 44 00 00 44 89 c6 4c 89 45 d0 e8 0c 82 ff ff 48
      [  358.028415] RIP  [<ffffffff81196040>] new_slab+0x280/0x320
      [  358.028432]  RSP <ffff88089b4d7ae8>
      [  358.032208] ---[ end trace 6443240199c706e4 ]---
      Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
      Cc: stable@vger.kernel.org      # for v3.13 and up
      Acked-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
      47bc59c5
  2. 04 Sep, 2014 5 commits
  3. 03 Sep, 2014 3 commits
  4. 16 Aug, 2014 18 commits