[PATCH 4/4] media: usbtv: drop redundant device reference

[Johan Hovold <johan@kernel.org>]

Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.

Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/media/usb/usbtv/usbtv-core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/usb/usbtv/usbtv-core.c b/drivers/media/usb/usbtv/usbtv-core.c
index c4bfadbe63c9..6c4facf4f41a 100644
--- a/drivers/media/usb/usbtv/usbtv-core.c
+++ b/drivers/media/usb/usbtv/usbtv-core.c
@@ -91,7 +91,7 @@ static int usbtv_probe(struct usb_interface *intf,
 	if (usbtv == NULL)
 		return -ENOMEM;
 	usbtv->dev = dev;
-	usbtv->udev = usb_get_dev(interface_to_usbdev(intf));
+	usbtv->udev = interface_to_usbdev(intf);
 
 	usbtv->iso_size = size;
 
@@ -119,7 +119,6 @@ static int usbtv_probe(struct usb_interface *intf,
 
 usbtv_video_fail:
 	usb_set_intfdata(intf, NULL);
-	usb_put_dev(usbtv->udev);
 	kfree(usbtv);
 
 	return ret;
@@ -137,7 +136,6 @@ static void usbtv_disconnect(struct usb_interface *intf)
 	usbtv_audio_free(usbtv);
 	usbtv_video_free(usbtv);
 
-	usb_put_dev(usbtv->udev);
 	usbtv->udev = NULL;
 
 	/* the usbtv structure will be deallocated when v4l2 will be
-- 
2.52.0