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Commit 0ac6053c authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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tty: PTYs set TTY_DO_WRITE_WAKEUP when they don't need to 



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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ff8cb0fd

drivers/char/pty.c

+0 −3
Original line number Diff line number Diff line
@@ -5,8 +5,6 @@ 
 *

 *  Added support for a Unix98-style ptmx device.

 *    -- 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

 *  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);

	set_bit(TTY_THROTTLED, &tty->flags);

	set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);

	retval = 0;

out:

	return retval;