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[media] imon: fix usbdev leaks

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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: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Alexey Khoroshilov 2014-09-15 18:36:15 -03:00 committed by Mauro Carvalho Chehab
parent 3bacc10cd4
commit e87cb47089
1 changed files with 6 additions and 0 deletions
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6
drivers/media/rc/imon.c
View file

@ -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);