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authorJiri Slaby <jslaby@suse.cz>2012-06-04 13:35:21 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-12 15:50:24 -0700
commit62f228acb807c370c3b1583bf0f1aa4ab8e19aca (patch)
tree770750aa0c324f286582d6317aa2d41d5e2cc122 /net/irda/ircomm/ircomm_tty_ioctl.c
parente673927d8a210ab1db27047080fc1bdb47f7e372 (diff)
downloadlinux-62f228acb807c370c3b1583bf0f1aa4ab8e19aca.tar.gz
TTY: ircomm, use tty from tty_port
This also includes a switch to tty refcounting. It makes sure, the code no longer can access a freed TTY struct. Sometimes the only thing needed is to pass tty down to the callies. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/irda/ircomm/ircomm_tty_ioctl.c')
-rw-r--r--net/irda/ircomm/ircomm_tty_ioctl.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/irda/ircomm/ircomm_tty_ioctl.c b/net/irda/ircomm/ircomm_tty_ioctl.c
index 31b917e9c8d..0eab6500e99 100644
--- a/net/irda/ircomm/ircomm_tty_ioctl.c
+++ b/net/irda/ircomm/ircomm_tty_ioctl.c
@@ -52,17 +52,18 @@
* Change speed of the driver. If the remote device is a DCE, then this
* should make it change the speed of its serial port
*/
-static void ircomm_tty_change_speed(struct ircomm_tty_cb *self)
+static void ircomm_tty_change_speed(struct ircomm_tty_cb *self,
+ struct tty_struct *tty)
{
unsigned int cflag, cval;
int baud;
IRDA_DEBUG(2, "%s()\n", __func__ );
- if (!self->tty || !self->tty->termios || !self->ircomm)
+ if (!self->ircomm)
return;
- cflag = self->tty->termios->c_cflag;
+ cflag = tty->termios->c_cflag;
/* byte size and parity */
switch (cflag & CSIZE) {
@@ -81,7 +82,7 @@ static void ircomm_tty_change_speed(struct ircomm_tty_cb *self)
cval |= IRCOMM_PARITY_EVEN;
/* Determine divisor based on baud rate */
- baud = tty_get_baud_rate(self->tty);
+ baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600; /* B0 transition handled in rs_set_termios */
@@ -159,7 +160,7 @@ void ircomm_tty_set_termios(struct tty_struct *tty,
return;
}
- ircomm_tty_change_speed(self);
+ ircomm_tty_change_speed(self, tty);
/* Handle transition to B0 status */
if ((old_termios->c_cflag & CBAUD) &&