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USB: mxu11x0: fix memory leak on usb_serial private data

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On nominal execution, private data allocated on port_probe and attach
are never freed. Add port_remove and release callbacks to free them
respectively.

Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Mathieu OTHACEHE 2016-01-04 19:49:36 +01:00 committed by Johan Hovold
parent e03cdf22a2
commit 028635d6b5
1 changed files with 20 additions and 0 deletions
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20
drivers/usb/serial/mxu11x0.c
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@ -368,6 +368,16 @@ static int mxu1_port_probe(struct usb_serial_port *port)
return 0;
}
static int mxu1_port_remove(struct usb_serial_port *port)
{
struct mxu1_port *mxport;
mxport = usb_get_serial_port_data(port);
kfree(mxport);
return 0;
}
static int mxu1_startup(struct usb_serial *serial)
{
struct mxu1_device *mxdev;
@ -427,6 +437,14 @@ static int mxu1_startup(struct usb_serial *serial)
return err;
}
static void mxu1_release(struct usb_serial *serial)
{
struct mxu1_device *mxdev;
mxdev = usb_get_serial_data(serial);
kfree(mxdev);
}
static int mxu1_write_byte(struct usb_serial_port *port, u32 addr,
u8 mask, u8 byte)
{
@ -957,7 +975,9 @@ static struct usb_serial_driver mxu11x0_device = {
.id_table = mxu1_idtable,
.num_ports = 1,
.port_probe = mxu1_port_probe,
.port_remove = mxu1_port_remove,
.attach = mxu1_startup,
.release = mxu1_release,
.open = mxu1_open,
.close = mxu1_close,
.ioctl = mxu1_ioctl,