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f2bfdb0628
linux/drivers/tty
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Masahiro Yamada f2bfdb0628 serial: 8250_early: confirm empty transmitter after sending characters 
The current code waits until the transmitter becomes empty,
before sending each character, and after finishing the whole string.
This seems a bit redundant.

It can be more efficient by checking the transmitter only after sending
each character.  This should be safe because the transmitter is already
empty at the first entry of serial_putc().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-13 19:59:48 -08:00
..
hvc TTY/Serial driver patches for 4.4-rc1 2015-11-04 21:35:12 -08:00
ipwireless Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
serial serial: 8250_early: confirm empty transmitter after sending characters 2015-12-13 19:59:48 -08:00
vt vt: Deinline save_screen, save 238 bytes 2015-12-13 19:59:48 -08:00
amiserial.c tty: amiserial.c: move assignment out of if () block 2015-05-10 19:04:16 +02:00
bfin_jtag_comm.c TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation 2015-03-07 03:44:14 +01:00
cyclades.c cyclades: Deinline cyz_is_loaded, save 240 bytes 2015-12-13 19:59:48 -08:00
ehv_bytechan.c tty: remove unused variable sprop 2015-02-03 15:52:13 -08:00
goldfish.c staging: goldfish: Fix pointer cast for 32 bits 2015-05-31 11:40:14 +09:00
isicom.c isicom: Deinline drop_dtr, save 112 bytes 2015-12-13 19:59:48 -08:00
Kconfig ttyFDC: Implement KGDB IO operations. 2015-03-31 12:04:13 +02:00
Makefile TTY: Add MIPS EJTAG Fast Debug Channel TTY driver 2015-03-31 12:04:12 +02:00
metag_da.c tty/metag_da: Avoid module_init/module_exit in non-modular code 2015-06-16 14:12:31 -04:00
mips_ejtag_fdc.c ttyFDC: Fix build problems due to use of module_{init,exit} 2015-10-17 21:29:21 -07:00
moxa.c
moxa.h
mxser.c
mxser.h
n_gsm.c tty: Convert use of __constant_htons to htons 2015-07-23 15:10:25 -07:00
n_hdlc.c pty: Fix input race when closing 2015-05-10 19:26:37 +02:00
n_r3964.c tty: r3964: Replace/remove bogus tty lock use 2015-10-17 21:11:29 -07:00
n_tracerouter.c n_tracerouter: stop including <asm-generic/bug> 2015-10-15 00:21:10 +02:00
n_tracesink.c n_tracesink: stop including <asm-generic/bug> 2015-10-15 00:21:11 +02:00
n_tracesink.h
n_tty.c tty: audit: Fix audit source 2015-11-20 16:19:54 -08:00
nozomi.c drivers/tty/nozomi.c: rename CONFIG_MAGIC 2015-05-10 19:19:06 +02:00
pty.c drivers/tty: make pty.c slightly more explicitly non-modular 2015-10-04 17:27:56 +01:00
rocket_int.h
rocket.c tty: Remove tty_port::close_wait 2015-10-17 21:11:29 -07:00
rocket.h tty: rocket: fix comment of ROCKET_SPD_HI 2015-05-24 12:49:16 -07:00
synclink_gt.c tty: Remove ASYNC_CLOSING checks in open()/hangup() methods 2015-10-17 21:11:29 -07:00
synclink.c tty: synclink, fix indentation 2015-10-17 21:14:06 -07:00
synclinkmp.c tty: Remove ASYNC_CLOSING checks in open()/hangup() methods 2015-10-17 21:11:29 -07:00
sysrq.c drivers/tty: make sysrq.c slightly more explicitly non-modular 2015-10-04 17:27:56 +01:00
tty_audit.c tty: audit: Fix audit source 2015-11-20 16:19:54 -08:00
tty_buffer.c tty: Use unbound workqueue for all input workers 2015-10-17 21:32:21 -07:00
tty_io.c tty: Fix tty_send_xchar() lock order inversion 2015-11-20 16:19:54 -08:00
tty_ioctl.c tty: Fix tty_send_xchar() lock order inversion 2015-11-20 16:19:54 -08:00
tty_ldisc.c tty/tty_ldisc: Deinline tty_ldisc_put, save 368 bytes 2015-12-13 19:59:48 -08:00
tty_ldsem.c tty: Deinline __ldsem_down_write_nested, save 128 bytes 2015-12-13 19:59:48 -08:00
tty_mutex.c tty: Make lock subclasses available for other tty locks 2015-02-02 10:11:27 -08:00
tty_port.c tty: Abstract tty buffer work 2015-10-17 21:32:21 -07:00