[PATCH 2/5] USB: cytherm: 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/usb/misc/cytherm.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/misc/cytherm.c b/drivers/usb/misc/cytherm.c
index 2bf082474e9d..b183df9826bc 100644
--- a/drivers/usb/misc/cytherm.c
+++ b/drivers/usb/misc/cytherm.c
@@ -311,7 +311,7 @@ static int cytherm_probe(struct usb_interface *interface,
 	if (!dev)
 		goto error_mem;
 
-	dev->udev = usb_get_dev(udev);
+	dev->udev = udev;
 
 	usb_set_intfdata(interface, dev);
 
@@ -334,8 +334,6 @@ static void cytherm_disconnect(struct usb_interface *interface)
 	/* first remove the files, then NULL the pointer */
 	usb_set_intfdata(interface, NULL);
 
-	usb_put_dev(dev->udev);
-
 	kfree(dev);
 
 	dev_info(&interface->dev, "Cypress thermometer now disconnected\n");
-- 
2.52.0