Jiri Slaby fa7501e57e tty: remove tty_operations::chars_in_buffer for non-buffering ... The only user of tty_ops::chars_in_buffer is tty_chars_in_buffer. And it considers tty_ops::chars_in_buffer optional. In case it's NULL, zero is returned. So remove all those chars_in_buffer from tty_ops which return zero. (Zero means such driver doesn't buffer.) Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Richard Henderson <rth@twiddle.net> Acked-by: Max Filippov <jcmvbkbc@gmail.com> # xtensa Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Chris Zankel <chris@zankel.net> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Link: https://lore.kernel.org/r/20210505091928.22010-26-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-13 18:29:11 +02:00
..
hvc	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
ipwireless	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
serdev	tty: serdev: core: Provide missing description for 'owner'	2020-11-06 10:49:27 +01:00
serial	tty: make tty_buffer_space_avail return uint	2021-05-13 18:29:11 +02:00
vt	tty: remove tty_operations::chars_in_buffer for non-buffering	2021-05-13 18:29:11 +02:00
amiserial.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
ehv_bytechan.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
goldfish.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
Kconfig	tty: pti: Remove Kconfig leftovers	2021-04-09 17:00:32 +02:00
Makefile	tty: remove broken r3964 line discipline	2021-05-13 16:57:15 +02:00
mips_ejtag_fdc.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
moxa.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
moxa.h
mxser.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
mxser.h
n_gsm.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
n_hdlc.c	tty: no checking of tty_unregister_ldisc	2021-05-13 16:57:17 +02:00
n_null.c	tty: make tty_ldisc_ops a param in tty_unregister_ldisc	2021-05-13 16:57:16 +02:00
n_tty.c	tty: drop tty_ldisc_ops::refcount	2021-05-13 16:57:17 +02:00
nozomi.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
pty.c	tty: remove tty_operations::chars_in_buffer for non-buffering	2021-05-13 18:29:11 +02:00
synclink_gt.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
sysrq.c	tty/sysrq: Fix issues of code indent should use tabs	2021-04-10 10:33:00 +02:00
tty.h	tty: clean include/linux/tty.h up	2021-04-15 10:32:17 +02:00
tty_audit.c	tty: audit: move some local functions out of tty.h	2021-04-15 10:24:58 +02:00
tty_baudrate.c	tty: clean include/linux/tty.h up	2021-04-15 10:32:17 +02:00
tty_buffer.c	tty: make tty_buffer_space_avail return uint	2021-05-13 18:29:11 +02:00
tty_io.c	tty: cumulate and document tty_struct::ctrl* members	2021-05-13 16:57:16 +02:00
tty_ioctl.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
tty_jobctrl.c	tty: cumulate and document tty_struct::ctrl* members	2021-05-13 16:57:16 +02:00
tty_ldisc.c	tty: return void from tty_unregister_ldisc	2021-05-13 16:57:17 +02:00
tty_ldsem.c
tty_mutex.c	tty: move some internal tty lock enums and functions out of tty.h	2021-04-15 10:26:58 +02:00
tty_port.c	tty: cumulate and document tty_struct::flow* members	2021-05-13 16:57:16 +02:00
ttynull.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00
vcc.c	tty: make tty_operations::write_room return uint	2021-05-13 17:03:20 +02:00