This is a note to let you know that I've just added the patch titled usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-gadget-udc-bdc-remove-unnecessary-null-checks-in-bdc_req_complete.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 09b04abb70f096333bef6bc95fa600b662e7ee13 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor <natechancellor@xxxxxxxxx> Date: Sat, 28 Mar 2020 18:12:46 -0700 Subject: usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete From: Nathan Chancellor <natechancellor@xxxxxxxxx> commit 09b04abb70f096333bef6bc95fa600b662e7ee13 upstream. When building with Clang + -Wtautological-pointer-compare: drivers/usb/gadget/udc/bdc/bdc_ep.c:543:28: warning: comparison of address of 'req->queue' equal to a null pointer is always false [-Wtautological-pointer-compare] if (req == NULL || &req->queue == NULL || &req->usb_req == NULL) ~~~~~^~~~~ ~~~~ drivers/usb/gadget/udc/bdc/bdc_ep.c:543:51: warning: comparison of address of 'req->usb_req' equal to a null pointer is always false [-Wtautological-pointer-compare] if (req == NULL || &req->queue == NULL || &req->usb_req == NULL) ~~~~~^~~~~~~ ~~~~ 2 warnings generated. As it notes, these statements will always evaluate to false so remove them. Fixes: efed421a94e6 ("usb: gadget: Add UDC driver for Broadcom USB3.0 device controller IP BDC") Link: https://github.com/ClangBuiltLinux/linux/issues/749 Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx> Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/gadget/udc/bdc/bdc_ep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/gadget/udc/bdc/bdc_ep.c +++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c @@ -540,7 +540,7 @@ static void bdc_req_complete(struct bdc_ { struct bdc *bdc = ep->bdc; - if (req == NULL || &req->queue == NULL || &req->usb_req == NULL) + if (req == NULL) return; dev_dbg(bdc->dev, "%s ep:%s status:%d\n", __func__, ep->name, status); Patches currently in stable-queue which might be from natechancellor@xxxxxxxxx are queue-4.19/usb-gadget-udc-bdc-remove-unnecessary-null-checks-in-bdc_req_complete.patch