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ec61847855
linux/drivers/tty
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Dave Martin ec61847855 Revert "serial/amba-pl011: Leave the TX IRQ alone when the UART is not open" 
This reverts commit f2ee6dfa0e.

Jakub Kiciński observed that this patch can cause the pl011
driver to hang if if the only process with a pl011 port open is
killed by a signal, pl011_shutdown() can get called with an
arbitrary amount of data still in the FIFO.

Calling _shutdown() with the TX FIFO non-empty is questionable
behaviour and my itself be a bug.

Since the affected patch was speculative anyway, and brings limited
benefit, the simplest course is to remove the assumption that TXIS
will always be left asserted after the port is shut down.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-09 18:36:36 +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 Revert "serial/amba-pl011: Leave the TX IRQ alone when the UART is not open" 2015-05-09 18:36:36 +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