linux_dsm_epyc7002/drivers/media/v4l2-core
Linus Torvalds 96d4f267e4 Remove 'type' argument from access_ok() function
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-03 18:57:57 -08:00
..
Kconfig media: v4l2-pci-skeleton: depend on CONFIG_SAMPLES 2018-12-03 14:42:22 -05:00
Makefile media: v4l2-core: get rid of videobuf-dvb 2018-05-04 10:57:31 -04:00
tuner-core.c media: v4l2-mc: get rid of global pad indexes 2018-09-17 13:16:19 -04:00
v4l2-async.c media: v4l2: async: remove locking when initializing async notifier 2018-12-05 06:51:28 -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: subdev: Add a function to set an I²C sub-device's name 2018-09-17 15:17:22 -04:00
v4l2-compat-ioctl32.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
v4l2-ctrls.c Linux 4.20-rc7 2018-12-17 10:34:24 -05:00
v4l2-dev.c media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT 2018-12-14 05:10:48 -05:00
v4l2-device.c media: v4l2-device: Link subdevices to their parent devices if available 2018-12-07 10:28:41 -05:00
v4l2-dv-timings.c media: hdmi.h: rename ADOBE_RGB to OPRGB and ADOBE_YCC to OPYCC 2018-09-24 09:28:41 -04:00
v4l2-event.c media: v4l: event: Add subscription to list before calling "add" operation 2018-11-06 07:07:40 -05:00
v4l2-fh.c media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
v4l2-flash-led-class.c media: use strscpy() instead of strlcpy() 2018-09-11 13:32:17 -04:00
v4l2-fwnode.c media: v4l2-fwnode: Fix setting V4L2_MBUS_DATA_ACTIVE_HIGH/LOW flag 2018-12-12 12:19:39 -05:00
v4l2-ioctl.c media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT 2018-12-14 05:10:48 -05:00
v4l2-mc.c media: v4l2-mc: add print messages when media graph fails 2018-09-17 13:16:19 -04:00
v4l2-mem2mem.c media: v4l2-mem2mem: Avoid calling .device_run in v4l2_m2m_job_finish 2018-11-23 06:37:47 -05:00
v4l2-subdev.c media updates for v4.20-rc1 2018-10-31 10:53:29 -07:00
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 treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
videobuf-vmalloc.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00