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1e84d22322
linux/drivers/tty
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Dave Martin 1e84d22322 serial/amba-pl011: Refactor and simplify TX FIFO handling 
Commit 734745c serial/amba-pl011: Activate TX IRQ passively
adds some complexity and overhead in the form of a softirq
mechanism for transmitting in the absence of interrupts.

This patch simplifies the code flow to reduce the reliance on
subtle behaviour and avoid fragility under future maintenance.

To this end, the TX softirq mechanism is removed and instead
pl011_start_tx() will now simply stuff the FIFO until full
(guaranteeing future TX IRQs), or until there are no more chars
to write (in which case we don't care whether an IRQ happens).

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-06 22:26:56 +02:00
..
hvc tty/hvc_opal: constify of_device_id array 2015-03-26 22:49:10 +01:00
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/amba-pl011: Refactor and simplify TX FIFO handling 2015-05-06 22:26:56 +02:00
vt tty: Use static attribute groups for sysfs entries 2015-03-26 16:10:10 +01:00
amiserial.c TTY: fix misspelling of current function in string 2015-01-09 14:38:15 -08:00
bfin_jtag_comm.c TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation 2015-03-07 03:44:14 +01:00
cyclades.c
ehv_bytechan.c tty: remove unused variable sprop 2015-02-03 15:52:13 -08:00
goldfish.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
isicom.c tty/isicom: fix big-endian compile warning 2015-02-02 10:11:25 -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
mips_ejtag_fdc.c ttyFDC: Implement KGDB IO operations. 2015-03-31 12:04:13 +02:00
moxa.c
moxa.h
mxser.c
mxser.h
n_gsm.c n_gsm: Drop unneeded cast on netdev_priv 2015-04-10 14:43:48 +02:00
n_hdlc.c
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c n_tty: Fix signal handling flushes 2015-02-02 10:11:27 -08:00
nozomi.c
pty.c n_tty: Fix signal handling flushes 2015-02-02 10:11:27 -08:00
rocket_int.h
rocket.c TTY: fix misspelling of current function in string 2015-01-09 14:38:15 -08:00
rocket.h
synclink_gt.c
synclink.c
synclinkmp.c
sysrq.c workqueue: dump workqueues on sysrq-t 2015-03-09 09:22:28 -04:00
tty_audit.c
tty_buffer.c pty: Fix buffer flush deadlock 2015-02-02 10:11:27 -08:00
tty_io.c tty: clean up the tty time logic a bit 2015-03-26 23:10:27 +01:00
tty_ioctl.c tty: Re-add external interface for tty_set_termios() 2015-04-28 14:26:20 +02:00
tty_ldisc.c tty: Allow safe access to termios for set_ldisc() handlers 2014-11-06 14:57:27 -08:00
tty_ldsem.c
tty_mutex.c tty: Make lock subclasses available for other tty locks 2015-02-02 10:11:27 -08:00
tty_port.c tty: Deletion of unnecessary checks before two function calls 2014-11-26 19:35:49 -08:00