From 36bcaabb338a60572f4f987e47203aa085904d88 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 29 May 2012 18:22:48 +0200 Subject: [PATCH] UPSTREAM: USB: option: fix memory leak Fix memory leak introduced by commit 383cedc3bb435de7a2 ("USB: serial: full autosuspend support for the option driver") which allocates usb-serial data but never frees it. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman (cherry picked from commit b9c3aab315b51f81649a0d737c4c73783fbd8de0) Change-Id: I21100086dfb256d5f7b2d14ee9b92b6bf1ae086e Signed-off-by: Ben Chan Reviewed-on: https://gerrit.chromium.org/gerrit/35407 Reviewed-by: Vincent Palatin --- drivers/usb/serial/option.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 46ce78673a94..7ba8a209918a 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -47,6 +47,7 @@ /* Function prototypes */ static int option_probe(struct usb_serial *serial, const struct usb_device_id *id); +static void option_release(struct usb_serial *serial); static int option_send_setup(struct usb_serial_port *port); static void option_instat_callback(struct urb *urb); @@ -1271,7 +1272,7 @@ static struct usb_serial_driver option_1port_device = { .ioctl = usb_wwan_ioctl, .attach = usb_wwan_startup, .disconnect = usb_wwan_disconnect, - .release = usb_wwan_release, + .release = option_release, .read_int_callback = option_instat_callback, #ifdef CONFIG_PM .suspend = usb_wwan_suspend, @@ -1382,6 +1383,15 @@ static int option_probe(struct usb_serial *serial, return 0; } +static void option_release(struct usb_serial *serial) +{ + struct usb_wwan_intf_private *priv = usb_get_serial_data(serial); + + usb_wwan_release(serial); + + kfree(priv); +} + static void option_instat_callback(struct urb *urb) { int err; -- 2.20.1