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
..
boot	alpha: Replace strncmp with str_has_prefix	2020-06-12 17:43:17 -07:00
configs	alpha: remove CONFIG_EXPERIMENTAL from defconfigs	2021-02-26 09:41:03 -08:00
include	mm: remove xlate_dev_kmem_ptr()	2021-05-07 00:26:34 -07:00
kernel	tty: remove tty_operations::chars_in_buffer for non-buffering	2021-05-13 18:29:11 +02:00
lib	alpha: csum_partial_copy.c: add function prototypes from <net/checksum.h>	2021-05-06 19:24:11 -07:00
math-emu	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
mm	mm: move mem_init_print_info() into mm_init()	2021-04-30 11:20:42 -07:00
Kconfig	s390 updates for the 5.12 merge window	2021-02-21 13:40:06 -08:00
Kconfig.debug	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	arch: alpha: Remove CONFIG_OPROFILE support	2021-01-22 12:11:34 +05:30