linux-stable/drivers/gpu/drm/armada
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
..
armada_510.c drm/armada: push responsibility for clock management to backend 2018-07-30 11:52:34 +01:00
armada_crtc.c drm/armada: remove unnecessary armada_plane structure 2018-07-30 11:53:06 +01:00
armada_crtc.h drm/armada: remove unnecessary armada_plane structure 2018-07-30 11:53:06 +01:00
armada_debugfs.c drm/armada: Remove armada_drm_debugfs_cleanup() 2017-03-01 16:09:51 +01:00
armada_drm.h drm/armada: remove obsolete fb unreferencing kfifo and workqueue 2018-07-30 11:53:06 +01:00
armada_drv.c drm/armada: remove obsolete fb unreferencing kfifo and workqueue 2018-07-30 11:53:06 +01:00
armada_fb.c drm/armada: move armada_drm_mode_config_funcs to armada_drv.c 2018-07-30 11:52:34 +01:00
armada_fb.h drm/armada: move armada_drm_mode_config_funcs to armada_drv.c 2018-07-30 11:52:34 +01:00
armada_fbdev.c drm/armada: move armada_drm_mode_config_funcs to armada_drv.c 2018-07-30 11:52:34 +01:00
armada_gem.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
armada_gem.h drm/armada: Use .dumb_map_offset and .dumb_destroy defaults 2017-09-02 14:22:20 +02:00
armada_hw.h drm/armada: add rectangle helpers 2018-07-30 11:52:34 +01:00
armada_ioctlP.h
armada_overlay.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
armada_plane.c drm/armada: remove unnecessary armada_plane structure 2018-07-30 11:53:06 +01:00
armada_plane.h drm/armada: remove unnecessary armada_plane structure 2018-07-30 11:53:06 +01:00
armada_trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
armada_trace.h drm/armada: expand overlay trace entry 2017-12-08 12:22:02 +00:00
Kconfig drm: add more MMU dependencies 2017-01-11 17:24:58 +01:00
Makefile drm/armada: move primary plane to separate file 2018-07-30 11:52:34 +01:00