diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2021-05-05 11:19:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 18:29:11 +0200 |
| commit | fa7501e57e9bf869cb6718a2699f05fc2807cbf1 (patch) | |
| tree | 40c54de40b1c5518536b80b11d21f2a776170c11 /arch/parisc/kernel/pdc_cons.c | |
| parent | 9a33fbf9d23034d7e89849c587b0aed0e4cf794d (diff) | |
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>
Diffstat (limited to 'arch/parisc/kernel/pdc_cons.c')
| -rw-r--r-- | arch/parisc/kernel/pdc_cons.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index fe2ed0bbd07e..39ccad063533 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -108,17 +108,11 @@ static unsigned int pdc_console_tty_write_room(struct tty_struct *tty) return 32768; /* no limit, no buffer used */ } -static int pdc_console_tty_chars_in_buffer(struct tty_struct *tty) -{ - return 0; /* no buffer */ -} - static const struct tty_operations pdc_console_tty_ops = { .open = pdc_console_tty_open, .close = pdc_console_tty_close, .write = pdc_console_tty_write, .write_room = pdc_console_tty_write_room, - .chars_in_buffer = pdc_console_tty_chars_in_buffer, }; static void pdc_console_poll(struct timer_list *unused) |