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[PATCH] tty: switch to ktermios and new framework

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This is the core of the switch to the new framework.  I've split it from the
driver patches which are mostly search/replace and would encourage people to
give this one a good hard stare.

The references to BOTHER and ISHIFT are the termios values that must be
defined by a platform once it wants to turn on "new style" ioctl support.  The
code patches here ensure that providing

1. The termios overlays the ktermios in memory
2. The only new kernel only fields are c_ispeed/c_ospeed (or none)

the existing behaviour is retained.  This is true for the patches at this
point in time.

Future patches will define BOTHER, ISHIFT and enable newer termios structures
for each architecture, and once they are all done some of the ifdefs also
vanish.

[akpm@osdl.org: warning fix]
[akpm@osdl.org: IRDA fix]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alan Cox 2006-12-08 02:38:44 -08:00 • committed by Linus Torvalds
parent be90038a24
commit edc6afc549
7 changed files with 297 additions and 127 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/linux/tty_ldisc.h
View file

@ -59,7 +59,7 @@
* low-level driver can "grab" an ioctl request before the line
* discpline has a chance to see it.
*
* void (*set_termios)(struct tty_struct *tty, struct termios * old);
* void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
*
* This function notifies the line discpline that a change has
* been made to the termios structure.
@ -118,7 +118,7 @@ struct tty_ldisc {
const unsigned char * buf, size_t nr);
int (*ioctl)(struct tty_struct * tty, struct file * file,
unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct termios * old);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
unsigned int (*poll)(struct tty_struct *, struct file *,
struct poll_table_struct *);
int (*hangup)(struct tty_struct *tty);