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tty: PTYs set TTY_DO_WRITE_WAKEUP when they don't need to

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The write wakeup is done anyway for the poll while DO_WRITE_WAKUP is
cleared, set and managed by the ldisc layer and is no business of the pty
code.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2009-01-02 13:47:20 +00:00 committed by Linus Torvalds
parent ff8cb0fd6f
commit 0ac6053c4d
1 changed files with 0 additions and 3 deletions
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3
drivers/char/pty.c
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@ -5,8 +5,6 @@
* *
* Added support for a Unix98-style ptmx device. * Added support for a Unix98-style ptmx device.
* -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998 * -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998
* Added TTY_DO_WRITE_WAKEUP to enable n_tty to send POLL_OUT to
* waiting writers -- Sapan Bhatia <sapan@corewars.org>
* *
* When reading this code see also fs/devpts. In particular note that the * When reading this code see also fs/devpts. In particular note that the
* driver_data field is used by the devpts side as a binding to the devpts * driver_data field is used by the devpts side as a binding to the devpts
@ -217,7 +215,6 @@ static int pty_open(struct tty_struct *tty, struct file *filp)
clear_bit(TTY_OTHER_CLOSED, &tty->link->flags); clear_bit(TTY_OTHER_CLOSED, &tty->link->flags);
set_bit(TTY_THROTTLED, &tty->flags); set_bit(TTY_THROTTLED, &tty->flags);
set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
retval = 0; retval = 0;
out: out:
return retval; return retval;