linux-toradex.git/include/linux/tty.h, branch v2.6.35-rc3

tty: n_gsm line discipline

2010-05-21T16:34:29+00:00

Add an implementation of GSM 0710 MUX. The implementation currently supports

- Basic and advanced framing (as either end of the link)
- UI or UIH data frames
- Adaption layer 1-4 (1 and 2 via tty, 3 and 4 as skbuff lists)
- Modem and control messages including the correct retry process
- Flow control

and exposes the MUX channels as a set of virtual tty devices including modem
signals. This is an experimental driver.

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

serial: TTY: new ldiscs for staging

2010-05-21T16:34:29+00:00

Push the max ldiscs by a few number to allow ldiscs
to exist in the staging directory and elsewhere.

Signed-off-by: Pavan Savoy 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2010-04-07T06:53:30+00:00

Conflicts:
	drivers/net/bonding/bond_main.c
	drivers/net/via-velocity.c
	drivers/net/wireless/iwlwifi/iwl-agn.c

net-caif-driver: add CAIF serial driver (ldisc)

2010-03-31T02:08:50+00:00

Add CAIF Serial driver. This driver is implemented as a line discipline.

caif_serial uses the following module parameters:
ser_use_stx - specifies if STart of frame eXtension is in use.
ser_loop    - sets the interface in loopback mode.

Signed-off-by: Sjur Braendeland 
Signed-off-by: David S. Miller

tty_port,usb-console: Fix usb serial console open/close regression

2010-03-19T14:17:57+00:00

Commit e1108a63e10d344284011cccc06328b2cd3e5da3 ("usb_serial: Use the
shutdown() operation") breaks the ability to use a usb console
starting in 2.6.33.  This was observed when using
console=ttyUSB0,115200 as a boot argument with an FTDI device.  The
error is:

ftdi_sio ttyUSB0: ftdi_submit_read_urb - failed submitting read urb, error -22

The handling of the ASYNCB_INITIALIZED changed in 2.6.32 such that in
tty_port_shutdown() it always clears the flag if it is set.  The fix
is to add a variable to the tty_port struct to indicate when the tty
port is a console.

CC: Alan Cox 
CC: Alan Stern 
CC: Oliver Neukum 
CC: Andrew Morton 
Signed-off-by: Jason Wessel 
Signed-off-by: Greg Kroah-Hartman

tty: Take a 256 byte padding into account when buffering below sub-page units

2010-03-19T14:17:53+00:00

The TTY layer takes some care to ensure that only sub-page allocations
are made with interrupts disabled. It does this by setting a goal of
"TTY_BUFFER_PAGE" to allocate. Unfortunately, while TTY_BUFFER_PAGE takes the
size of tty_buffer into account, it fails to account that tty_buffer_find()
rounds the buffer size out to the next 256 byte boundary before adding on
the size of the tty_buffer.

This patch adjusts the TTY_BUFFER_PAGE calculation to take into account the
size of the tty_buffer and the padding. Once applied, tty_buffer_alloc()
should not require high-order allocations.

Signed-off-by: Mel Gorman 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

ldisc n_tty: add new method n_tty_inherit_ops()

2010-03-12T23:52:43+00:00

This new method can be used to init a new struct tty_ldisc_ops as the
default tty_ldisc_N_TTY struct.

Signed-off-by: Rodolfo Giometti 
Cc: David Woodhouse 
Cc: Greg KH 
Cc: Alan Cox 
Cc: Alexander Gordeev 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tty: Keep the default buffering to sub-page units

2010-03-02T22:43:23+00:00

We allocate during interrupts so while our buffering is normally diced up
small anyway on some hardware at speed we can pressure the VM excessively
for page pairs. We don't really need big buffers to be linear so don't try
so hard.

In order to make this work well we will tidy up excess callers to request_room,
which cannot itself enforce this break up.

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

tty.h: make tty_port_get() static inline

2010-01-16T20:15:38+00:00

I get a few dozen of these warnings when using
  gcc (GCC) 4.4.1 20090725 (Red Hat 4.4.1-2):

In file included from mmotm-2010-0113-1217/init/do_mounts.c:5:
mmotm-2010-0113-1217/include/linux/tty.h: In function 'tty_port_get':
mmotm-2010-0113-1217/include/linux/tty.h:469: warning: '______f' is static but declared in inline function 'tty_port_get' which is not static

so make the function static inline.

[akpm@linux-foundation.org: may as well convert tty_port_users() also]
Signed-off-by: Randy Dunlap 
Cc: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vt: introduce and use vt_kmsg_redirect() function

2009-12-15T16:53:28+00:00

The kernel offers with TIOCL_GETKMSGREDIRECT ioctl() the possibility to
redirect the kernel messages to a specific console.

However, since it's not possible to switch to the kernel message console
after a panic(), it would be nice if the kernel would print the panic
message on the current console.

This patch series adds a new interface to access the global kmsg_redirect
variable by a function to be able to use it in code where
CONFIG_VT_CONSOLE is not set (kernel/panic.c).

This patch:

Instead of using and exporting a global value kmsg_redirect, introduce a
function vt_kmsg_redirect() that both can set and return the console where
messages are printed.

Change all users of kmsg_redirect (the VT code itself and kernel/power.c)
to the new interface.

The main advantage is that vt_kmsg_redirect() can also be used when
CONFIG_VT_CONSOLE is not set.

Signed-off-by: Bernhard Walle 
Cc: Alan Cox 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds