Fix port-data memory leak by moving port data deallocation to
port_remove for regular ports.
Since commit 0998d0631001288 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Note that the oob port is never registered as a port device and it's
port data should thus be dellocated in release as before.
Compile-only tested.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
---
drivers/usb/serial/digi_acceleport.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index c86f68c..d94bff4 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -244,6 +244,7 @@ static int digi_startup_device(struct usb_serial *serial);
static int digi_startup(struct usb_serial *serial);
static void digi_disconnect(struct usb_serial *serial);
static void digi_release(struct usb_serial *serial);
+static int digi_port_remove(struct usb_serial_port *port);
static void digi_read_bulk_callback(struct urb *urb);
static int digi_read_inb_callback(struct urb *urb);
static int digi_read_oob_callback(struct urb *urb);
@@ -294,6 +295,7 @@ static struct usb_serial_driver digi_acceleport_2_device = {
.attach = digi_startup,
.disconnect = digi_disconnect,
.release = digi_release,
+ .port_remove = digi_port_remove,
};
static struct usb_serial_driver digi_acceleport_4_device = {
@@ -320,6 +322,7 @@ static struct usb_serial_driver digi_acceleport_4_device = {
.attach = digi_startup,
.disconnect = digi_disconnect,
.release = digi_release,
+ .port_remove = digi_port_remove,
};
static struct usb_serial_driver * const serial_drivers[] = {
@@ -1313,15 +1316,26 @@ static void digi_disconnect(struct usb_serial *serial)
static void digi_release(struct usb_serial *serial)
{
- int i;
+ struct digi_serial *serial_priv;
+ struct digi_port *priv;
- /* free the private data structures for all ports */
- /* number of regular ports + 1 for the out-of-band port */
- for (i = 0; i < serial->type->num_ports + 1; i++)
- kfree(usb_get_serial_port_data(serial->port[i]));
- kfree(usb_get_serial_data(serial));
+ serial_priv = usb_get_serial_data(serial);
+
+ priv = usb_get_serial_port_data(serial_priv->ds_oob_port);
+ kfree(priv);
+
+ kfree(serial_priv);
}
+static int digi_port_remove(struct usb_serial_port *port)
+{
+ struct digi_port *priv;
+
+ priv = usb_get_serial_port_data(port);
+ kfree(priv);
+
+ return 0;
+}
static void digi_read_bulk_callback(struct urb *urb)
{
--
1.7.12.4
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