linux-stable.git/drivers/tty, branch linux-3.11.y

serial: vt8500: add missing braces

2013-11-04T12:35:21+00:00

commit d969de8d83401683420638c8107dcfedb2146f37 upstream.

Due to missing braces on an if statement, in presence of a device_node a
port was always assigned -1, regardless of any alias entries in the
device tree. Conversely, if device_node was NULL, an unitialized port
ended up being used.

This patch adds the missing braces, fixing the issues.

Signed-off-by: Roel Kluin 
Acked-by: Tony Prisk 
Signed-off-by: Greg Kroah-Hartman

xen/hvc: allow xenboot console to be used again

2013-10-14T01:14:30+00:00

commit a9fbf4d591da6cd1d3eaab826c7c15f77fc8f6a3 upstream.

Commit d0380e6c3c0f6edb986d8798a23acfaf33d5df23 (early_printk:
consolidate random copies of identical code) added in 3.10 introduced
a check for con->index == -1 in early_console_register().

Initialize index to -1 for the xenboot console so earlyprintk=xen
works again.

Signed-off-by: David Vrabel 
Cc: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

serial: pch_uart: fix tty-kref leak in dma-rx path

2013-10-05T14:17:55+00:00

commit 19b85cfb190eb9980eaf416bff96aef4159a430e upstream.

Fix tty_kref leak when tty_buffer_request room fails in dma-rx path.

Note that the tty ref isn't really needed anymore, but as the leak has
always been there, fixing it before removing should makes it easier to
backport the fix.

Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

serial: pch_uart: fix tty-kref leak in rx-error path

2013-10-05T14:17:55+00:00

commit fc0919c68cb2f75bb1af759315f9d7e2a9443c28 upstream.

Fix tty-kref leak introduced by commit 384e301e ("pch_uart: fix a
deadlock when pch_uart as console") which never put its tty reference.

Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

serial: tegra: fix tty-kref leak

2013-10-05T14:17:55+00:00

commit cfd29aa0e81b791985e8428e6507e80e074e6730 upstream.

Fix potential tty-kref leak in stop_rx path.

Signed-off-by: Johan Hovold 
Tested-by: Stephen Warren 
Signed-off-by: Greg Kroah-Hartman

tty: Fix SIGTTOU not sent with tcflush()

2013-10-05T14:17:55+00:00

commit 5cec7bf699c61d14f0538345076480bb8c8ebfbb upstream.

Commit 'e7f3880cd9b98c5bf9391ae7acdec82b75403776'
  tty: Fix recursive deadlock in tty_perform_flush()
introduced a regression where tcflush() does not generate
SIGTTOU for background process groups.

Make sure ioctl(TCFLSH) calls tty_check_change() when
invoked from the line discipline.

Reported-by: Oleg Nesterov 
Signed-off-by: Peter Hurley 
Signed-off-by: Greg Kroah-Hartman

tty: disassociate_ctty() sends the extra SIGCONT

2013-09-27T00:21:37+00:00

commit 03e1261778cca782d41a3d8e3945ca88cf93e01e upstream.

Starting from v3.10 (probably commit f91e2590410b: "tty: Signal
foreground group processes in hangup") disassociate_ctty() sends SIGCONT
if tty && on_exit.  This breaks LSB test-suite, in particular test8 in
_exit.c and test40 in sigcon5.c.

Put the "!on_exit" check back to restore the old behaviour.

Review by Peter Hurley:
 "Yes, this regression was introduced by me in that commit.  The effect
  of the regression is that ptys will receive a SIGCONT when, in similar
  circumstances, ttys would not.

  The fact that two test vectors accidentally tripped over this
  regression suggests that some other apps may as well.

  Thanks for catching this"

Signed-off-by: Oleg Nesterov 
Reported-by: Karel Srot 
Reviewed-by: Peter Hurley 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.

2013-08-27T06:59:56+00:00

This solves a problem observed in kexec'ed kernel where 200ms timeout is
too short and bootconsole fails to initialize. Console did eventually
become workable but much later into the boot process.

Observed timeout was around 260ms, but I decided to make it a little bigger
for more reliability.

This has been tested on Power7 machine with Petitboot as a primary
bootloader and PowerNV firmware.

CC: 
Signed-off-by: Eugene Surovegin 
Signed-off-by: Benjamin Herrenschmidt

parisc: Fix interrupt routing for C8000 serial ports

2013-07-31T21:42:32+00:00

We can't use dev->mod_index for selecting the interrupt routing entry,
because it's not an index into interrupt routing table. It will be even
wrong on a machine with 2 CPUs (4 cores). But all needed information is
contained in the PAT entries for the serial ports. mod[0] contains the
iosapic address and mod_info has some indications for the interrupt
input (at least it looks like it). This patch implements the searching
for the right iosapic and uses this interrupt input information.

Signed-off-by: Thomas Bogendoerfer 
Cc:  # 3.10
Signed-off-by: Helge Deller

serial: arc_uart: Fix module alias

2013-07-26T23:34:00+00:00

Platform drivers use "platform:" prefix in module alias.
Also use DRIVER_NAME in MODULE_ALIAS to make module autoloading work.

Signed-off-by: Axel Lin 
Acked-by: Vineet Gupta 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman