diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2012-04-02 13:54:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-09 20:30:39 +0200 |
| commit | 19ef1b7151dc58c4d90a76d364dc93721bb04e9b (patch) | |
| tree | 510b743245840dc666e092d7f2f3e1dc6dc711b2 /drivers | |
| parent | TTY: ipwireless, add tty_port (diff) | |
| download | linux-19ef1b7151dc58c4d90a76d364dc93721bb04e9b.tar.xz linux-19ef1b7151dc58c4d90a76d364dc93721bb04e9b.zip | |
TTY: ipwireless, use tty from tty_port
It does not make the driver less racy though. Close and hangup should
be rewritten and tty refcounting used properly.
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/ipwireless/tty.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c index 0b4964d1eea5..f8b5fa0093a3 100644 --- a/drivers/tty/ipwireless/tty.c +++ b/drivers/tty/ipwireless/tty.c @@ -51,7 +51,6 @@ struct ipw_tty { unsigned int secondary_channel_idx; int tty_type; struct ipw_network *network; - struct tty_struct *linux_tty; unsigned int control_lines; struct mutex ipw_tty_mutex; int tx_bytes_queued; @@ -105,7 +104,7 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp) tty->port.count++; - tty->linux_tty = linux_tty; + tty->port.tty = linux_tty; linux_tty->driver_data = tty; linux_tty->low_latency = 1; @@ -122,10 +121,10 @@ static void do_ipw_close(struct ipw_tty *tty) tty->port.count--; if (tty->port.count == 0) { - struct tty_struct *linux_tty = tty->linux_tty; + struct tty_struct *linux_tty = tty->port.tty; if (linux_tty != NULL) { - tty->linux_tty = NULL; + tty->port.tty = NULL; linux_tty->driver_data = NULL; if (tty->tty_type == TTYTYPE_MODEM) @@ -165,7 +164,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, int work = 0; mutex_lock(&tty->ipw_tty_mutex); - linux_tty = tty->linux_tty; + linux_tty = tty->port.tty; if (linux_tty == NULL) { mutex_unlock(&tty->ipw_tty_mutex); return; @@ -553,9 +552,9 @@ void ipwireless_tty_free(struct ipw_tty *tty) ": deregistering %s device ttyIPWp%d\n", tty_type_name(ttyj->tty_type), j); ttyj->closing = 1; - if (ttyj->linux_tty != NULL) { + if (ttyj->port.tty != NULL) { mutex_unlock(&ttyj->ipw_tty_mutex); - tty_vhangup(ttyj->linux_tty); + tty_vhangup(ttyj->port.tty); /* FIXME: Exactly how is the tty object locked here against a parallel ioctl etc */ /* FIXME2: hangup does not mean all processes @@ -651,8 +650,8 @@ ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, */ if ((old_control_lines & IPW_CONTROL_LINE_DCD) && !(tty->control_lines & IPW_CONTROL_LINE_DCD) - && tty->linux_tty) { - tty_hangup(tty->linux_tty); + && tty->port.tty) { + tty_hangup(tty->port.tty); } } |