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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2015-03-27 19:39:09 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-04-02 23:55:20 -0300
commitafd270d1a45043cef14341bcceff62ed50e8dc9a (patch)
tree1d4eb5414cdb217841453d083d4c48f45fd136d8
parentcc7d2dfb75b3ac0f248801ceed65f69465eb0389 (diff)
[media] usbvision: fix leak of usb_dev on failure paths in usbvision_probe()
There is no usb_put_dev() on failure paths in usbvision_probe(). 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>
-rw-r--r--drivers/media/usb/usbvision/usbvision-video.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index 2579c87..12b403e 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -1507,7 +1507,7 @@ static int usbvision_probe(struct usb_interface *intf,
const struct usb_host_interface *interface;
struct usb_usbvision *usbvision = NULL;
const struct usb_endpoint_descriptor *endpoint;
- int model, i;
+ int model, i, ret;
PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
dev->descriptor.idVendor,
@@ -1516,7 +1516,8 @@ static int usbvision_probe(struct usb_interface *intf,
model = devid->driver_info;
if (model < 0 || model >= usbvision_device_data_size) {
PDEBUG(DBG_PROBE, "model out of bounds %d", model);
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_usb;
}
printk(KERN_INFO "%s: %s found\n", __func__,
usbvision_device_data[model].model_string);
@@ -1531,18 +1532,21 @@ static int usbvision_probe(struct usb_interface *intf,
__func__, ifnum);
dev_err(&intf->dev, "%s: Endpoint attributes %d",
__func__, endpoint->bmAttributes);
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_usb;
}
if (usb_endpoint_dir_out(endpoint)) {
dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
__func__, ifnum);
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_usb;
}
usbvision = usbvision_alloc(dev, intf);
if (usbvision == NULL) {
dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_usb;
}
if (dev->descriptor.bNumConfigurations > 1)
@@ -1561,8 +1565,8 @@ static int usbvision_probe(struct usb_interface *intf,
usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
if (usbvision->alt_max_pkt_size == NULL) {
dev_err(&intf->dev, "usbvision: out of memory!\n");
- usbvision_release(usbvision);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_pkt;
}
for (i = 0; i < usbvision->num_alt; i++) {
@@ -1597,6 +1601,12 @@ static int usbvision_probe(struct usb_interface *intf,
PDEBUG(DBG_PROBE, "success");
return 0;
+
+err_pkt:
+ usbvision_release(usbvision);
+err_usb:
+ usb_put_dev(dev);
+ return ret;
}