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TTY: ldisc, move wait idle to caller

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It is the only place where reinit is called from. And we really need
to wait for the old ldisc to go once. Actually this is the place where
the waiting originally was (before removed and re-added later).

This will make the fix in the following patch easier to implement.

Signed-off-by: Jiri Slaby <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Dave Jones <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: Dmitriy Matrosov <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Jiri Slaby 2011-11-16 16:27:08 +01:00 • committed by Greg Kroah-Hartman
commit 300420722e
1 changed files with 2 additions and 2 deletions
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4
drivers/tty/tty_ldisc.c
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@ -763,8 +763,6 @@ static int tty_ldisc_reinit(struct tty_struct *tty, int ldisc)
if (IS_ERR(ld))
return -1;
WARN_ON_ONCE(tty_ldisc_wait_idle(tty, 5 * HZ));
tty_ldisc_close(tty, tty->ldisc);
tty_ldisc_put(tty->ldisc);
tty->ldisc = NULL;
@ -848,6 +846,8 @@ void tty_ldisc_hangup(struct tty_struct *tty)
it means auditing a lot of other paths so this is
a FIXME */
if (tty->ldisc) { /* Not yet closed */
WARN_ON_ONCE(tty_ldisc_wait_idle(tty, 5 * HZ));
if (reset == 0) {
if (!tty_ldisc_reinit(tty, tty->termios->c_line))