1. 10 Nov, 2019 1 commit
  2. 09 Nov, 2019 19 commits
  3. 08 Nov, 2019 17 commits
  4. 05 Nov, 2019 3 commits
    • Hans Verkuil's avatar
      media: am437x: fix smatch warning · 6a8c521c
      Hans Verkuil authored
      Fixes this warning:
      
      drivers/media/platform/am437x/am437x-vpfe.c:288 vpfe_ccdc_validate_param() warn: unsigned 'ccdcparam->alaw.gamma_wd' is never less than zero.
      
      by dropping the gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 check
      since VPFE_CCDC_GAMMA_BITS_15_6 is 0.
      Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
      Reviewed-by: default avatarBenoit Parrot <bparrot@ti.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
      6a8c521c
    • Hans Verkuil's avatar
      media: vivid: media_device_cleanup was called too early · 8ffd573c
      Hans Verkuil authored
      Running the contrib/test/test-media script in v4l-utils with the vivid argument
      will cause this kernel warning:
      
      [  104.748720] videodev: v4l2_release
      [  104.748731] ------------[ cut here ]------------
      [  104.748750] DEBUG_LOCKS_WARN_ON(lock->magic != lock)
      [  104.748790] WARNING: CPU: 6 PID: 1823 at kernel/locking/mutex.c:938 __mutex_lock+0x919/0xc10
      [  104.748800] Modules linked in: rc_cec vivid v4l2_tpg videobuf2_dma_contig cec rc_core v4l2_dv_timings videobuf2_vmalloc videobuf2_memops
      videobuf2_v4l2 videobuf2_common videodev mc vmw_balloon vmw_vmci button vmwgfx
      [  104.748845] CPU: 6 PID: 1823 Comm: sleep Not tainted 5.4.0-rc1-test-no #150
      [  104.748853] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/29/2019
      [  104.748867] RIP: 0010:__mutex_lock+0x919/0xc10
      [  104.748878] Code: 59 83 e8 9a fc 16 ff 44 8b 05 23 61 38 01 45 85 c0 0f 85 ef f7 ff ff 48 c7 c6 a0 1f 87 82 48 c7 c7 a0 1e 87 82 e8 cd bb
      f7 fe <0f> 0b e9 d5 f7 ff ff f6 c3 04 0f 84 3b fd ff ff 49 89 df 41 83 e7
      [  104.748886] RSP: 0018:ffff88811a357b80 EFLAGS: 00010286
      [  104.748895] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
      [  104.748902] RDX: 0000000000000003 RSI: 0000000000000004 RDI: ffffed102346af62
      [  104.748910] RBP: ffff88811a357cf0 R08: ffffffff81217c91 R09: fffffbfff061c271
      [  104.748917] R10: fffffbfff061c270 R11: ffffffff830e1383 R12: ffff8881a46103c0
      [  104.748924] R13: 0000000000000000 R14: ffff8881a4614f90 R15: ffff8881a46153d0
      [  104.748933] FS:  0000000000000000(0000) GS:ffff8881b6780000(0000) knlGS:0000000000000000
      [  104.748940] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  104.748949] CR2: 00007f163fc9ca20 CR3: 0000000003013004 CR4: 00000000001606e0
      [  104.749036] Call Trace:
      [  104.749051]  ? _raw_spin_unlock+0x1f/0x30
      [  104.749067]  ? llist_add_batch+0x33/0x50
      [  104.749081]  ? tick_nohz_tick_stopped+0x19/0x30
      [  104.749130]  ? v4l2_release.cold+0x6c/0xd6 [videodev]
      [  104.749143]  ? mutex_lock_io_nested+0xb80/0xb80
      [  104.749153]  ? vprintk_emit+0xf2/0x220
      [  104.749191]  ? vivid_req_validate+0x40/0x40 [vivid]
      [  104.749201]  ? printk+0xad/0xde
      [  104.749211]  ? kmsg_dump_rewind_nolock+0x54/0x54
      [  104.749226]  ? locks_remove_file+0x78/0x2b0
      [  104.749248]  ? __fsnotify_update_child_dentry_flags.part.0+0x170/0x170
      [  104.749281]  ? vivid_req_validate+0x40/0x40 [vivid]
      [  104.749321]  ? v4l2_release.cold+0x6c/0xd6 [videodev]
      [  104.749361]  v4l2_release.cold+0x6c/0xd6 [videodev]
      [  104.749378]  __fput+0x15a/0x390
      [  104.749393]  task_work_run+0xb2/0xe0
      [  104.749407]  do_exit+0x4d0/0x1200
      [  104.749422]  ? do_user_addr_fault+0x367/0x610
      [  104.749431]  ? release_task+0x990/0x990
      [  104.749449]  ? rwsem_spin_on_owner+0x170/0x170
      [  104.749463]  ? vmacache_find+0xb2/0x100
      [  104.749476]  do_group_exit+0x85/0x130
      [  104.749487]  __x64_sys_exit_group+0x23/0x30
      [  104.749500]  do_syscall_64+0x5e/0x1c0
      [  104.749511]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      [  104.749520] RIP: 0033:0x7f163fc5c9d6
      [  104.749536] Code: Bad RIP value.
      [  104.749543] RSP: 002b:00007ffe6f3bec58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
      [  104.749553] RAX: ffffffffffffffda RBX: 00007f163fd4d760 RCX: 00007f163fc5c9d6
      [  104.749560] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
      [  104.749567] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80
      [  104.749574] R10: 00007ffe6f3beb24 R11: 0000000000000246 R12: 00007f163fd4d760
      [  104.749581] R13: 0000000000000002 R14: 00007f163fd56428 R15: 0000000000000000
      [  104.749597] ---[ end trace 66f20f73fc0daf79 ]---
      
      This is caused by media_device_cleanup() which destroys
      v4l2_dev->mdev->req_queue_mutex. But v4l2_release() tries to lock
      that mutex after media_device_cleanup() is called.
      
      By moving media_device_cleanup() to the v4l2_device's release function it is
      guaranteed that the mutex is valid whenever v4l2_release is called.
      Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
      8ffd573c
    • Nícolas F. R. A. Prado's avatar
      media: vimc: Make capture devices and subdevices use different link_validates · 31172e52
      Nícolas F. R. A. Prado authored
      Instead of validating the links to capture devices and subdevices with
      the same function, use the default v4l function for links between
      subdevices and only use a different function for validating between
      capture device and subdevice.
      This change should also ease future work to associate multiple mbus
      codes for the same pixelformat in vimc_pix_map.
      
      These changes were tested with
      v4l2-compliance SHA: 3f806630e2ecbcebe31872b865c5c4b42f111a99, 64 bits
      and passed all tests:
      Grand Total for vimc device /dev/media0: 451, Succeeded: 451, Failed: 0, Warnings: 0
      Signed-off-by: default avatarNícolas F. R. A. Prado <nfraprado@protonmail.com>
      Acked-by: default avatarHelen Koike <helen.koike@collabora.com>
      Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
      31172e52