On Sun, Jan 03, 2016 at 03:25:59PM +0100, Mathieu OTHACEHE wrote:
> On nominal execution, private data allocated on port_probe and attach
> are never freed. Add port_remove and release callbacks to free them
> respectively.
Ouch. I thought I'd vetted the driver for further memleaks but
apparently missed the most obvious ones.
> Signed-off-by: Mathieu OTHACEHE <m.othacehe@xxxxxxxxx>
> ---
> drivers/usb/serial/mxu11x0.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/drivers/usb/serial/mxu11x0.c b/drivers/usb/serial/mxu11x0.c
> index e3c3f57c..0fe7eab 100644
> --- a/drivers/usb/serial/mxu11x0.c
> +++ b/drivers/usb/serial/mxu11x0.c
> @@ -328,6 +328,14 @@ static int mxu1_download_firmware(struct usb_serial *serial,
> return 0;
> }
>
> +static void mxu1_release(struct usb_serial *serial)
> +{
> + struct mxu1_device *mxdev;
> +
> + mxdev = usb_get_serial_data(serial);
> + kfree(mxdev);
> +}
Please place this once after the matching attach (startup) callback.
> +
> static int mxu1_port_probe(struct usb_serial_port *port)
> {
> struct mxu1_port *mxport;
> @@ -368,6 +376,16 @@ 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;
Thanks,
Johan
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