diff options
| author | Johan Hovold <jhovold@gmail.com> | 2012-10-25 12:29:06 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-25 20:36:58 +0400 |
| commit | feffa7ca6008ab859dd7ab7448a5a899bf0aa98f (patch) | |
| tree | 7e52c82145eab218089d75d44c2c181039af32cd /drivers/usb | |
| parent | 4230af572f95b3115bba1ee6fb95681f3851ab26 (diff) | |
| download | linux-feffa7ca6008ab859dd7ab7448a5a899bf0aa98f.tar.xz | |
USB: omninet: fix port-data memory leak
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
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.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/omninet.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index 6def58b79382..9ab73d295774 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -44,8 +44,8 @@ static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int omninet_write_room(struct tty_struct *tty); static void omninet_disconnect(struct usb_serial *serial); -static void omninet_release(struct usb_serial *serial); -static int omninet_attach(struct usb_serial *serial); +static int omninet_port_probe(struct usb_serial_port *port); +static int omninet_port_remove(struct usb_serial_port *port); static const struct usb_device_id id_table[] = { { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) }, @@ -62,7 +62,8 @@ static struct usb_serial_driver zyxel_omninet_device = { .description = "ZyXEL - omni.net lcd plus usb", .id_table = id_table, .num_ports = 1, - .attach = omninet_attach, + .port_probe = omninet_port_probe, + .port_remove = omninet_port_remove, .open = omninet_open, .close = omninet_close, .write = omninet_write, @@ -70,7 +71,6 @@ static struct usb_serial_driver zyxel_omninet_device = { .read_bulk_callback = omninet_read_bulk_callback, .write_bulk_callback = omninet_write_bulk_callback, .disconnect = omninet_disconnect, - .release = omninet_release, }; static struct usb_serial_driver * const serial_drivers[] = { @@ -112,18 +112,26 @@ struct omninet_data { __u8 od_outseq; /* Sequence number for bulk_out URBs */ }; -static int omninet_attach(struct usb_serial *serial) +static int omninet_port_probe(struct usb_serial_port *port) { struct omninet_data *od; - struct usb_serial_port *port = serial->port[0]; od = kmalloc(sizeof(struct omninet_data), GFP_KERNEL); - if (!od) { - dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", - __func__, sizeof(struct omninet_data)); + if (!od) return -ENOMEM; - } + usb_set_serial_port_data(port, od); + + return 0; +} + +static int omninet_port_remove(struct usb_serial_port *port) +{ + struct omninet_data *od; + + od = usb_get_serial_port_data(port); + kfree(od); + return 0; } @@ -279,14 +287,6 @@ static void omninet_disconnect(struct usb_serial *serial) usb_kill_urb(wport->write_urb); } - -static void omninet_release(struct usb_serial *serial) -{ - struct usb_serial_port *port = serial->port[0]; - - kfree(usb_get_serial_port_data(port)); -} - module_usb_serial_driver(serial_drivers, id_table); MODULE_AUTHOR(DRIVER_AUTHOR); |