diff options
| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2015-01-16 19:55:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-02-02 10:47:15 -0200 |
| commit | 5eeb3014827f44ea7de43c865118cb2095ad030e (patch) | |
| tree | 4939b10b67a62cd9b244c7642edd028bdc2c4c84 /drivers/media/usb | |
| parent | e99f0115e56ce4c4cda269cd21b25f7e14fa548f (diff) | |
| download | lwn-5eeb3014827f44ea7de43c865118cb2095ad030e.tar.gz lwn-5eeb3014827f44ea7de43c865118cb2095ad030e.zip | |
[media] cx231xx: fix usbdev leak on failure paths in cx231xx_usb_probe()
Commit b7085c086475 ("cx231xx: convert from pr_foo to dev_foo")
moves usb_get_dev(interface_to_usbdev(interface)) to the beginning
of cx231xx_usb_probe() to use udev->dev in dev_err(),
but it does not make sure usbdev is put on all failure paths.
Later dev_err(udev->dev) was replaced by dev_err(d).
So the patch moves usb_get_dev() below (before the first use)
and fixes another failure path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/cx231xx/cx231xx-cards.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index ae05d591f228..33c2fa2e7596 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1403,7 +1403,6 @@ static int cx231xx_usb_probe(struct usb_interface *interface, struct usb_interface_assoc_descriptor *assoc_desc; ifnum = interface->altsetting[0].desc.bInterfaceNumber; - udev = usb_get_dev(interface_to_usbdev(interface)); /* * Interface number 0 - IR interface (handled by mceusb driver) @@ -1424,11 +1423,13 @@ static int cx231xx_usb_probe(struct usb_interface *interface, } } while (test_and_set_bit(nr, &cx231xx_devused)); + udev = usb_get_dev(interface_to_usbdev(interface)); + /* allocate memory for our device state and initialize it */ dev = devm_kzalloc(&udev->dev, sizeof(*dev), GFP_KERNEL); if (dev == NULL) { - clear_bit(nr, &cx231xx_devused); - return -ENOMEM; + retval = -ENOMEM; + goto err_if; } snprintf(dev->name, 29, "cx231xx #%d", nr); |