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73a110623e
linux/drivers/media/v4l2-core
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Hans Verkuil 73a110623e media: v4l2-core: push taking ioctl mutex down to ioctl handler 
The ioctl serialization mutex (vdev->lock or q->lock for vb2 queues)
was taken at the highest level in v4l2-dev.c. This prevents more
fine-grained locking since at that level we cannot examine the ioctl
arguments, we can only do that after video_usercopy is called.

So push the locking down to __video_do_ioctl() and subdev_do_ioctl_lock().

This also allows us to make a few functions in v4l2-ioctl.c static and
video_usercopy() is no longer exported.

The locking scheme is not changed by this patch, just pushed down.

Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-28 16:31:44 -04:00
..
Kconfig media: Remove depends on HAS_DMA in case of platform dependency 2018-05-28 16:17:08 -04:00
Makefile media: v4l2-core: get rid of videobuf-dvb 2018-05-04 10:57:31 -04:00
tuner-core.c media: add tuner standby op, use where needed 2018-03-21 12:05:39 -04:00
v4l2-async.c media: v4l2-async: simplify v4l2_async_subdev structure 2017-12-29 07:14:28 -05:00
v4l2-clk.c media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
v4l2-common.c media: v4l: common: Remove v4l2_find_nearest_format 2018-03-21 11:21:33 -04:00
v4l2-compat-ioctl32.c media: v4l2-compat-ioctl32: better document the code 2018-04-20 08:24:13 -04:00
v4l2-ctrls.c media: v4l2: Add v4l2 control IDs for HEVC encoder 2018-03-22 06:32:15 -04:00
v4l2-dev.c media: v4l2-core: push taking ioctl mutex down to ioctl handler 2018-05-28 16:31:44 -04:00
v4l2-device.c [media] v4l: Allow calling v4l2_device_register_subdev_nodes() multiple times 2017-03-22 11:21:43 -03:00
v4l2-dv-timings.c media: v4l2-dv-timings: add v4l2_hdmi_colorimetry() 2018-02-22 12:41:09 -05:00
v4l2-event.c [media] v4l2-core: Use kvmalloc() for potentially big allocations 2017-06-20 09:11:48 -03:00
v4l2-fh.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
v4l2-flash-led-class.c media: v4l2-flash-led-class: Create separate sub-devices for indicators 2017-08-26 20:26:35 -04:00
v4l2-fwnode.c media: v4l2-fwnode: simplify v4l2_fwnode_reference_parse_int_props() 2018-04-17 05:49:58 -04:00
v4l2-ioctl.c media: v4l2-core: push taking ioctl mutex down to ioctl handler 2018-05-28 16:31:44 -04:00
v4l2-mc.c media: v4l2-core: v4l2-mc: Add SPDX license identifier 2018-02-26 07:42:03 -05:00
v4l2-mem2mem.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
v4l2-subdev.c media: v4l2-core: push taking ioctl mutex down to ioctl handler 2018-05-28 16:31:44 -04:00
v4l2-trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
videobuf-core.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
videobuf-dma-contig.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
videobuf-dma-sg.c Linux 4.17-rc4 2018-05-10 07:19:23 -04:00
videobuf-vmalloc.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00