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[3.13.y-ckt,34/85] USB: symbolserial: Use usb_get_serial_port_data

Message ID 1445376941-7046-35-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Oct. 20, 2015, 9:34 p.m. UTC 
3.13.11-ckt28 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Philipp Hachtmann <hachti@hachti.de>

commit 951d3793bbfc0a441d791d820183aa3085c83ea9 upstream.

The driver used usb_get_serial_data(port->serial) which compiled but resulted
in a NULL pointer being returned (and subsequently used). I did not go deeper
into this but I guess this is a regression.

Signed-off-by: Philipp Hachtmann <hachti@hachti.de>
Fixes: a85796ee5149 ("USB: symbolserial: move private-data allocation to
port_probe")
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/usb/serial/symbolserial.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index 9b16489..1e2d86d 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -97,7 +97,7 @@  exit:
 
 static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port)
 {
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 	unsigned long flags;
 	int result = 0;
 
@@ -123,7 +123,7 @@  static void symbol_close(struct usb_serial_port *port)
 static void symbol_throttle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 
 	spin_lock_irq(&priv->lock);
 	priv->throttled = true;
@@ -133,7 +133,7 @@  static void symbol_throttle(struct tty_struct *tty)
 static void symbol_unthrottle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 	int result;
 	bool was_throttled;