From: Alexey Khoroshilov Date: Fri, 16 Jan 2015 22:55:26 +0000 (-0300) Subject: [media] cx231xx: fix usbdev leak on failure paths in cx231xx_usb_probe() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5eeb3014827f44ea7de43c865118cb2095ad030e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- 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);