| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 58/70] usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete | Date | Fri, 1 May 2020 15:21:46 +0200 |
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From: Nathan Chancellor <natechancellor@gmail.com>
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@gmail.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -546,7 +546,7 @@ 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);
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