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[PATCH] char/tty_io: replace schedule_timeout() with msleep_interruptible()

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Use msleep_interruptible() instead of schedule_timeout() in send_break() to
guarantee the task delays as expected.  Change @duration's units to
milliseconds, and modify arguments in callers appropriately.  Patch is
compile-tested.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Domen Puncer 2005-06-25 14:58:42 -07:00 committed by Linus Torvalds
parent d8eddb6204
commit b20f3ae5f0
1 changed files with 5 additions and 5 deletions
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10
drivers/char/tty_io.c
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@ -94,6 +94,7 @@
#include <linux/idr.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@ -2180,12 +2181,11 @@ static int tiocsetd(struct tty_struct *tty, int __user *p)
return tty_set_ldisc(tty, ldisc);
}
static int send_break(struct tty_struct *tty, int duration)
static int send_break(struct tty_struct *tty, unsigned int duration)
{
tty->driver->break_ctl(tty, -1);
if (!signal_pending(current)) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(duration);
msleep_interruptible(duration);
}
tty->driver->break_ctl(tty, 0);
if (signal_pending(current))
@ -2366,10 +2366,10 @@ int tty_ioctl(struct inode * inode, struct file * file,
* all by anyone?
*/
if (!arg)
return send_break(tty, HZ/4);
return send_break(tty, 250);
return 0;
case TCSBRKP: /* support for POSIX tcsendbreak() */
return send_break(tty, arg ? arg*(HZ/10) : HZ/4);
return send_break(tty, arg ? arg*100 : 250);
case TIOCMGET:
return tty_tiocmget(tty, file, p);