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Commit e87cb470 authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Mauro Carvalho Chehab
Browse files

[media] imon: fix usbdev leaks 



imon_probe() does three usb_get_dev(), but there is no any
usb_put_dev() in the driver.

The patch adds usb_put_dev() to error paths, to imon_disconnect()
and to imon_probe() as far as usbdev is not saved anywhere.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 3bacc10c

drivers/media/rc/imon.c

+6 −0
Original line number Diff line number Diff line
@@ -2283,6 +2283,7 @@ static struct imon_context *imon_init_intf0(struct usb_interface *intf, 
	usb_kill_urb(ictx->rx_urb_intf0);

urb_submit_failed:

find_endpoint_failed:

	usb_put_dev(ictx->usbdev_intf0);

	mutex_unlock(&ictx->lock);

	usb_free_urb(tx_urb);

tx_urb_alloc_failed:
@@ -2355,6 +2356,7 @@ static struct imon_context *imon_init_intf1(struct usb_interface *intf, 
		input_unregister_device(ictx->touch);

touch_setup_failed:

find_endpoint_failed:

	usb_put_dev(ictx->usbdev_intf1);

	mutex_unlock(&ictx->lock);

	usb_free_urb(rx_urb);

rx_urb_alloc_failed:
@@ -2468,11 +2470,13 @@ static int imon_probe(struct usb_interface *interface, 
		 usbdev->bus->busnum, usbdev->devnum);



	mutex_unlock(&driver_lock);

	usb_put_dev(usbdev);



	return 0;



fail:

	mutex_unlock(&driver_lock);

	usb_put_dev(usbdev);

	dev_err(dev, "unable to register, err %d\n", ret);



	return ret;
@@ -2512,6 +2516,7 @@ static void imon_disconnect(struct usb_interface *interface) 
	if (ifnum == 0) {

		ictx->dev_present_intf0 = false;

		usb_kill_urb(ictx->rx_urb_intf0);

		usb_put_dev(ictx->usbdev_intf0);

		input_unregister_device(ictx->idev);

		rc_unregister_device(ictx->rdev);

		if (ictx->display_supported) {
@@ -2523,6 +2528,7 @@ static void imon_disconnect(struct usb_interface *interface) 
	} else {

		ictx->dev_present_intf1 = false;

		usb_kill_urb(ictx->rx_urb_intf1);

		usb_put_dev(ictx->usbdev_intf1);

		if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {

			input_unregister_device(ictx->touch);

			del_timer_sync(&ictx->ttimer);