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ldisc: new dcd_change() method for line disciplines

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Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rodolfo Giometti 2010-03-10 15:23:45 -08:00 • committed by Linus Torvalds
parent 697fb85fcf
commit b3e63afe8a
2 changed files with 12 additions and 0 deletions
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8
include/linux/tty_ldisc.h
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@ -99,6 +99,12 @@
* cease I/O to the tty driver. Can sleep. The driver should
* seek to perform this action quickly but should wait until
* any pending driver I/O is completed.
*
* void (*dcd_change)(struct tty_struct *tty, unsigned int status,
* struct timespec *ts)
*
* Tells the discipline that the DCD pin has changed its status and
* the relative timestamp. Pointer ts can be NULL.
*/
#include <linux/fs.h>
@ -136,6 +142,8 @@ struct tty_ldisc_ops {
void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
char *fp, int count);
void (*write_wakeup)(struct tty_struct *);
void (*dcd_change)(struct tty_struct *, unsigned int,
struct timespec *);
struct module *owner;