V4L/DVB (10296): uvcvideo: Fix memory leak in input device handling
The dynamically allocated input_dev->phys buffer isn't freed when
unregistering the device. As the input layer doesn't provide any release
callback, use a fixed-size buffer inside the uvc_device structure.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c
index c705f24..21d8712 100644
--- a/drivers/media/video/uvc/uvc_status.c
+++ b/drivers/media/video/uvc/uvc_status.c
@@ -24,26 +24,19 @@
#ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV
static int uvc_input_init(struct uvc_device *dev)
{
- struct usb_device *udev = dev->udev;
struct input_dev *input;
- char *phys = NULL;
int ret;
input = input_allocate_device();
if (input == NULL)
return -ENOMEM;
- phys = kmalloc(6 + strlen(udev->bus->bus_name) + strlen(udev->devpath),
- GFP_KERNEL);
- if (phys == NULL) {
- ret = -ENOMEM;
- goto error;
- }
- sprintf(phys, "usb-%s-%s", udev->bus->bus_name, udev->devpath);
+ usb_make_path(dev->udev, dev->input_phys, sizeof(dev->input_phys));
+ strlcat(dev->input_phys, "/button", sizeof(dev->input_phys));
input->name = dev->name;
- input->phys = phys;
- usb_to_input_id(udev, &input->id);
+ input->phys = dev->input_phys;
+ usb_to_input_id(dev->udev, &input->id);
input->dev.parent = &dev->intf->dev;
__set_bit(EV_KEY, input->evbit);
@@ -57,7 +50,6 @@
error:
input_free_device(input);
- kfree(phys);
return ret;
}
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
index b263987..6f55c4d 100644
--- a/drivers/media/video/uvc/uvcvideo.h
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -647,6 +647,7 @@
struct urb *int_urb;
__u8 *status;
struct input_dev *input;
+ char input_phys[64];
/* Video Streaming interfaces */
struct list_head streaming;