litmus-rt.git/drivers/usb/serial/kobil_sct.c, branch 2010.2

USB: tty: Prune uses of tty_request_room in the USB layer

2010-03-02T22:55:12+00:00

We have lots of callers that do not need to do this in the first place.
Remove the calls as they both cost CPU and for big buffers can mess up the
multi-page allocation avoidance.

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

USB serial: make USB device id constant

2010-03-02T22:54:16+00:00

The id_table field of the struct usb_device_id is constant in 
so it is worth to make the initialization data also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// 
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
	struct I1 {
	  ...
	  const struct I2 *x;
	  ...
	};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
	struct I1 y = {
	  .x = E,
	};
@c@
identifier r.I2;
identifier s.E;
@@
	const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+	const
	struct I2 E[] = ...;
// 

Signed-off-by: Németh Márton 
Cc: Julia Lawall 
Cc: cocci@diku.dk
Signed-off-by: Greg Kroah-Hartman

USB: kobil_sct: clean up kobil_set_termios

2010-03-02T22:53:57+00:00

Kill string that is allocated and generated using speed and parity
settings but is never used (and never has been).

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

tty: USB serial termios bits

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

Various drivers have hacks to mangle termios structures. This stems from
the fact there is no nice setup hook for configuring the termios settings
when the port is created

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

tty: USB does not need the filp argument in the drivers

2009-09-19T20:13:26+00:00

And indeed none of them use it. Clean this up as it will make moving to a
standard open method rather easier.

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

USB: usb-serial: replace shutdown with disconnect, release

2009-06-16T04:44:47+00:00

This patch (as1254) splits up the shutdown method of usb_serial_driver
into a disconnect and a release method.

The problem is that the usb-serial core was calling shutdown during
disconnect handling, but drivers didn't expect it to be called until
after all the open file references had been closed.  The result was an
oops when the close method tried to use memory that had been
deallocated by shutdown.

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

tty: Bring the usb tty port structure into more use

2009-06-11T15:50:56+00:00

This allows us to clean stuff up, but is probably also going to cause
some app breakage with buggy apps as we now implement proper POSIX behaviour
for USB ports matching all the other ports. This does also mean other apps
that break on USB will now work properly.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

USB: removal of tty->low_latency hack dating back to the old serial code

2009-04-23T21:15:29+00:00

This removes tty->low_latency from all USB serial drivers that push
data into the tty layer at hard interrupt context. It's no longer needed
and actually harmful.

Signed-off-by: Oliver Neukum 
Cc: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

USB: remove info() macro from usb/serial drivers

2008-10-17T21:41:09+00:00

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.

Signed-off-by: Greg Kroah-Hartman

tty: usb-serial krefs

2008-10-13T16:51:41+00:00

Use kref in the USB serial drivers so that we don't free tty structures
from under the URB receive handlers as has historically been the case if
you were unlucky. This also gives us a framework for general tty drivers to
use tty_port objects and refcount.

Contains two err->dev_err changes merged together to fix clashes in the
-next tree.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds