Linus Torvalds 279e54536d tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer ... [ Upstream commit 3b830a9c34 ] The tty line discipline .read() function was passed the final user pointer destination as an argument, which doesn't match the 'write()' function, and makes it very inconvenient to do a splice method for ttys. This is a conversion to use a kernel buffer instead. NOTE! It does this by passing the tty line discipline ->read() function an additional "cookie" to fill in, and an offset into the cookie data. The line discipline can fill in the cookie data with its own private information, and then the reader will repeat the read until either the cookie is cleared or it runs out of data. The only real user of this is N_HDLC, which can use this to handle big packets, even if the kernel buffer is smaller than the whole packet. Cc: Christoph Hellwig <hch@lst.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-03-04 11:37:36 +01:00
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gameport	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
joystick	Input: xpad - sync supported devices with fork on GitHub	2021-02-10 09:29:22 +01:00
keyboard	Input: omap4-keypad - fix runtime PM error handling	2020-12-30 11:53:19 +01:00
misc	Input: cm109 - do not stomp on control URB	2020-12-11 13:17:36 -08:00
mouse	Input: cyapa_gen6 - fix out-of-bounds stack access	2020-12-30 11:54:05 +01:00
rmi4	Input: synaptics-rmi4 - support bootloader v8 in f34v7	2020-10-04 19:51:45 -07:00
serio	tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer	2021-03-04 11:37:36 +01:00
tablet	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
touchscreen	Input: ili210x - implement pressure reporting for ILI251x	2021-02-10 09:29:22 +01:00
apm-power.c
evbug.c
evdev.c	Input: evdev - per-client waitgroups	2020-10-06 18:34:15 -07:00
ff-core.c
ff-memless.c	Input: ff-memless - kill timer in destroy()	2019-11-15 11:45:03 -08:00
input-compat.c
input-compat.h
input-leds.c
input-mt.c	Input: MT - avoid comma separated statements	2020-08-25 10:26:05 -07:00
input-polldev.c
input-poller.c	Input: add input_get_poll_interval()	2019-10-04 12:31:46 -07:00
input-poller.h
input.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2020-03-26 20:49:44 -07:00
joydev.c
Kconfig
Makefile
matrix-keymap.c
mousedev.c
sparse-keymap.c	Input: Use fallthrough pseudo-keyword	2020-07-07 11:25:54 -07:00