linux-toradex.git/drivers/serial/serial_core.c, branch tegra-10.7.1

serial_core: Add wake_peer uart operation which is called before starting UART TX. The idea here is to provide a mechanism where we can wakeup our peer before sending data.

2010-02-08T23:35:56+00:00

Signed-off-by: San Mehat

tty, serial: Fix race and NULL check in uart_close()

2009-10-12T17:21:33+00:00

Commit 46d57a449aa1 ("serial: use tty_port pointers in the core code")
contained two bugs that causes (rare) crashes:

 - the rename typoed one site

 - a NULL check was missed

Reported-and-tested-by: Ingo Molnar 
Cc: Greg KH 
Cc: Alan Cox 
Signed-off-by: Ingo Molnar 
Signed-off-by: Linus Torvalds

serial core: fix new kernel-doc warnings

2009-09-23T18:24:57+00:00

Fix new kernel-doc warnings in serial_core.[hc] files.

  Warning(include/linux/serial_core.h:485): No description found for parameter 'uport'
  Warning(include/linux/serial_core.h:485): Excess function parameter 'port' description in 'uart_handle_dcd_change'
  Warning(include/linux/serial_core.h:511): No description found for parameter 'uport'
  Warning(include/linux/serial_core.h:511): Excess function parameter 'port' description in 'uart_handle_cts_change'
  Warning(drivers/serial/serial_core.c:2437): No description found for parameter 'uport'
  Warning(drivers/serial/serial_core.c:2437): Excess function parameter 'port' description in 'uart_add_one_port'
  Warning(drivers/serial/serial_core.c:2509): No description found for parameter 'uport'
  Warning(drivers/serial/serial_core.c:2509): Excess function parameter 'port' description in 'uart_remove_one_port'

Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds

Set proper console speed on resume if console suspend is disabled

2009-09-19T20:13:33+00:00

Commit b5b82df6, from May 2007, breaks no_console_suspend on the OLPC
XO laptop. Basically what happens is that upon returning from resume,
serial8250_resume_port() will reconfigure the port for high speed
mode and all console output will be garbled, making debug of the
resume path painful. This patch modifies uart_resume_port() to
reset the port to the state it was in before we suspended.

Original patch by Marcelo Tosatti

Second patch by Deepak then reworked by Alan to fit with the tty changes
before it got submitted. Also fixed the console path to set c_i/ospeed as
some drivers require the termios fields are valid

Signed-off-by: Deepak Saxena 
Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: introduce tty krefs

2009-09-19T20:13:33+00:00

Initially just use the helper and thus krefs when we set and clear the
port values.

Signed-off-by: Alan Cox

serial: kill USF_CLOSING_* definitions

2009-09-19T20:13:32+00:00

The serial layer for some reason uses different defines for the special
case close delays and then conditionally switches to/from the normal ones
in the ioctls.

Remove this rather pointless abstraction

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: move port users helper

2009-09-19T20:13:32+00:00

This little helper is now tty_port specific and useful generally so move it

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: move delta_msr_wait into the tty_port

2009-09-19T20:13:31+00:00

This is used by various drivers not just serial and can be extracted
as commonality

Signed-off-by: Alan Cox

serial: replace the state mutex with the tty port mutex

2009-09-19T20:13:31+00:00

They cover essentially the same stuff and we can therefore fold it into the
tty_port one.

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: move the flags into the tty_port field

2009-09-19T20:13:30+00:00

Fortunately the serial layer was designed to use the same flag values but
with different names. It has its own SUSPENDED flag which is a free slot in
the ASYNC flags so we allocate it in the ASYNC flags instead.

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman