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TTY: ipwireless, use synchronous hangup 

Do not touch internal workqueue. Call tty_vhangup instead.

Note that finished hangup does not necessarily mean that all processes
are dead. Especially when the tty is a console. The code assumes that
right now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-04-02 13:54:31 +02:00 committed by Greg Kroah-Hartman
parent daea440215
commit de3a60a343
1 changed files with 3 additions and 3 deletions
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6
drivers/tty/ipwireless/tty.c
View File

@ -565,11 +565,11 @@ void ipwireless_tty_free(struct ipw_tty *tty)
ttyj->closing = 1;
if (ttyj->linux_tty != NULL) {
mutex_unlock(&ttyj->ipw_tty_mutex);
tty_hangup(ttyj->linux_tty);
/* Wait till the tty_hangup has completed */
flush_work_sync(&ttyj->linux_tty->hangup_work);
tty_vhangup(ttyj->linux_tty);
/* FIXME: Exactly how is the tty object locked here
against a parallel ioctl etc */
/* FIXME2: hangup does not mean all processes
* are gone */
mutex_lock(&ttyj->ipw_tty_mutex);
}
while (ttyj->open_count)