Andrey Utkin 59eba2d1ec [media] saa7146: Fix for while releasing video buffers ... Fix this bug: "[BUG] process stuck when closing saa7146 [dvb_ttpci]" Release queued DMA buffers when ending streaming, so that videobuf_waiton() doesn't block forever. As reported, this fixes avoids occasional lockup of process reading from video device, which manifests in such log: INFO: task ffmpeg:9864 blocked for more than 120 seconds. Tainted: P O 4.6.7 #3 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. ffmpeg D ffff880177cc7b00 0 9864 1 0x00000000 ffff880177cc7b00 0000000000000202 0000000000000202 ffffffff8180b4c0 ffff88019d79e4c0 ffffffff81064050 ffff880177cc7ae0 ffff880177cc8000 ffff880177cc7b18 ffff8801fd41d648 ffff8802307acca0 ffff8802307acc70 Call Trace: [<ffffffff81064050>] ? preempt_count_add+0x89/0xab [<ffffffff81477215>] schedule+0x86/0x9e [<ffffffff81477215>] ? schedule+0x86/0x9e [<ffffffffa0fe1c96>] videobuf_waiton+0x131/0x15e [videobuf_core] [<ffffffff8107727b>] ? wait_woken+0x6d/0x6d [<ffffffffa1017be9>] saa7146_dma_free+0x39/0x5b [saa7146_vv] [<ffffffffa10186c4>] buffer_release+0x2a/0x3e [saa7146_vv] [<ffffffffa0fee4a8>] videobuf_vm_close+0xd8/0x103 [videobuf_dma_sg] [<ffffffff8112049e>] remove_vma+0x25/0x4d [<ffffffff81121a32>] exit_mmap+0xce/0xf7 [<ffffffff8104381d>] mmput+0x4e/0xe2 [<ffffffff810491fd>] do_exit+0x372/0x920 [<ffffffff81049813>] do_group_exit+0x3c/0x98 [<ffffffff810522ef>] get_signal+0x4e8/0x56e [<ffffffff810710a5>] ? task_dead_fair+0xd/0xf [<ffffffff81017020>] do_signal+0x23/0x521 [<ffffffff81479e82>] ? _raw_spin_unlock_irqrestore+0x13/0x25 [<ffffffff8109710d>] ? hrtimer_try_to_cancel+0xd7/0x104 [<ffffffff8109b306>] ? ktime_get+0x4c/0xa1 [<ffffffff81096ea6>] ? update_rmtp+0x46/0x5b [<ffffffff81097ce0>] ? hrtimer_nanosleep+0xe4/0x10e [<ffffffff81096e3c>] ? hrtimer_init+0xeb/0xeb [<ffffffff810014f8>] exit_to_usermode_loop+0x4f/0x93 [<ffffffff810019fe>] syscall_return_slowpath+0x3b/0x46 [<ffffffff8147a355>] entry_SYSCALL_64_fastpath+0x8d/0x8f Reported-by: Philipp Matthias Hahn <pmhahn+video@pmhahn.de> Tested-by: Philipp Matthias Hahn <pmhahn+video@pmhahn.de> Signed-off-by: Andrey Utkin <andrey_utkin@fastmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>		2016-11-23 19:52:12 -02:00
..
cec	[media] cec: ignore messages that we initiated	2016-11-22 05:43:07 -02:00
common	[media] saa7146: Fix for while releasing video buffers	2016-11-23 19:52:12 -02:00
dvb-core	[media] Raise adapter number limit	2016-11-23 13:28:43 -02:00
dvb-frontends	[media] dvb: remove unused systime() function	2016-11-23 12:58:10 -02:00
firewire	[media] firewire: don't break long lines	2016-10-21 10:06:00 -02:00
i2c	[media] tvp5150: get rid of KERN_CONT	2016-11-18 10:11:09 -02:00
mmc
pci	[media] netup_unidvb: use module_pci_driver	2016-11-22 16:30:03 -02:00
platform	[media] ti-vpe: get rid of some smatch warnings	2016-11-22 09:08:36 -02:00
radio	[media] wl128x: use KERNEL_CONT where needed	2016-11-18 09:37:24 -02:00
rc	[media] mceusb: remove pointless mce_flush_rx_buffer function	2016-11-23 13:49:36 -02:00
spi	[media] gs1662: drop kfree for memory allocated with devm_kzalloc	2016-10-24 17:59:08 -02:00
tuners	Revert "[media] dvb_frontend: merge duplicate dvb_tuner_ops.release implementations"	2016-11-18 20:44:33 -02:00
usb	[media] em28xx: only use mt9v011 if camera support is enabled	2016-11-23 13:17:25 -02:00
v4l2-core	[media] v4l: compat: Prevent allocating excessive amounts of memory	2016-11-22 10:31:23 -02:00
cec-edid.c
Kconfig	[media] Kconfig: fix breakages when DVB_CORE is not selected	2016-11-18 17:59:17 -02:00
Makefile	[media] cec: move the CEC framework out of staging and to media	2016-11-16 15:40:20 -02:00
media-device.c	[media] drivers/media/media-device: fix double free bug in _unregister()	2016-11-18 15:29:27 -02:00
media-devnode.c
media-entity.c	[media] media-entity: clear media_gobj.mdev in _destroy()	2016-11-18 15:19:16 -02:00