From d464dac47260a33add5a206fd3289ec1216e8435 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Fri, 5 Apr 2024 07:58:10 +0200 Subject: usb: gadget: fsl: Initialize udc before using it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit fsl_ep_queue() is only called by usb_ep_queue() (as ep->ops->queue()). So _ep isn't NULL. As ep->ops->queue = fsl_ep_queue, the ep was initialized by struct_ep_setup() and so ep->udc isn't NULL either. Drop the check for _ep being NULL and assign udc earlier to prevent following an uninitialized pointer in the two dev_vdbg()s in lines 878 and 882. This fixes a compiler warning when using clang and CONFIG_USB_GADGET_VERBOSE=y. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202404050227.TTvcCPBu-lkp@intel.com/ Fixes: 6025f20f16c2 ("usb: gadget: fsl-udc: Replace custom log wrappers by dev_{err,warn,dbg,vdbg}") Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240405055812.694123-2-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/fsl_udc_core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index e82d03224f94..3432ebfae978 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -868,7 +868,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) { struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep); struct fsl_req *req = container_of(_req, struct fsl_req, req); - struct fsl_udc *udc; + struct fsl_udc *udc = ep->udc; unsigned long flags; int ret; @@ -878,7 +878,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) dev_vdbg(&udc->gadget.dev, "%s, bad params\n", __func__); return -EINVAL; } - if (unlikely(!_ep || !ep->ep.desc)) { + if (unlikely(!ep->ep.desc)) { dev_vdbg(&udc->gadget.dev, "%s, bad ep\n", __func__); return -EINVAL; } @@ -887,7 +887,6 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -EMSGSIZE; } - udc = ep->udc; if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; -- cgit v1.2.3