linux/drivers/staging
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
..
android Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
axis-fifo staging: axis-fifo: Split line to stay in 80 characters. 2018-11-20 10:59:30 +01:00
board
clocking-wizard
comedi Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
emxx_udc staging: emxx_udc: Remove cast and move all in one line. 2018-12-05 09:44:10 +01:00
erofs staging: erofs: Fix spelling issue 2018-12-12 11:30:05 +01:00
fbtft staging: fbtft: fix strncmp() size warning 2018-12-19 08:29:28 +01:00
fsl-dpaa2 net: core: dev: Add extack argument to dev_open() 2018-12-06 13:26:06 -08:00
fwserial staging: fwserial: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-17 14:24:07 +01:00
gasket staging: gasket: formatting fixes 2018-11-12 14:43:15 -08:00
gdm724x
goldfish
greybus staging: greybus: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-17 14:24:42 +01:00
gs_fpgaboot
iio Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0" 2018-12-08 11:15:54 +00:00
ks7010
media Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
most staging: most: sound: replace snprintf with strscpy 2018-12-19 08:28:22 +01:00
mt7621-dma staging: mt7621-dma: fix unbalanced braces 2018-12-17 14:17:28 +01:00
mt7621-dts staging: mt7621-dts: avoid warnings in pinctrl definitions 2018-12-12 11:55:39 +01:00
mt7621-eth staging: mt7621-eth: fix compile warning. 2018-12-12 11:55:39 +01:00
mt7621-mmc staging: mt7621-mmc: Correct spelling mistakes in comments 2018-12-20 18:11:58 +01:00
mt7621-pci staging: mt7621-pci: add comment clarifying inverted reset lines 2018-12-05 09:39:45 +01:00
mt7621-pinctrl staging: mt7621-pinctrl: fix uninitialized variable ngroups 2018-11-11 11:47:38 -08:00
mt7621-spi staging: mt7621-spi: drop support for SPI mode 1/2/3 2018-12-12 11:34:53 +01:00
netlogic
nvec
octeon Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
octeon-usb staging: octeon-usb: use a helper function to set the DMA mask 2018-12-05 09:47:02 +01:00
olpc_dcon staging: olpc_dcon: olpc_dcon_xo_1.c: Switch to the gpio descriptor interface 2018-11-08 03:59:47 -08:00
pi433 staging: pi433: add missing call to cdev_del() 2018-12-05 09:39:45 +01:00
rtl8188eu staging: rtl8188eu: cleanup brace coding style issues 2018-12-19 08:32:33 +01:00
rtl8192e Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
rtl8192u Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
rtl8712 Merge 4.20-rc6 into staging-next 2018-12-10 09:23:50 +01:00
rtl8723bs Staging: rtl8723bs: Fix code style issue in rtl8723bs driver 2018-12-17 14:26:10 +01:00
rtlwifi staging: rtlwifi: fix spelling mistake "disnabled" -> "disabled" 2018-12-05 09:39:45 +01:00
rts5208 Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
sm750fb
speakup staging: speakup: change semaphore to completion 2018-12-12 11:31:14 +01:00
unisys Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
vboxvideo Staging/IIO driver patches for 4.21-rc1 2018-12-28 20:39:58 -08:00
vc04_services staging: vc04_services: Remove VCHIU_QUEUE_T typedef 2018-12-17 14:48:35 +01:00
vme
vt6655 staging: vt6655: fix small typo 2018-11-07 13:07:26 +01:00
vt6656
wilc1000 staging: wilc1000: fix missing read_write setting when reading data 2018-12-20 16:32:13 +01:00
wlan-ng staging: wlan-ng: remove unused variable in prism2fw.c 2018-11-20 10:59:30 +01:00
xgifb
Kconfig
Makefile