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Date: Thu, 23 Apr 2020 09:30:57 -0700 From: Nathan Chancellor <natechancellor@...il.com> To: kbuild test robot <lkp@...el.com> Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org> Subject: Re: drivers/usb/gadget/udc/s3c2410_udc.c:255:11: warning: comparison of address of 'ep->queue' equal to a null pointer is always false On Thu, Apr 23, 2020 at 03:02:27PM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: c578ddb39e565139897124e74e5a43e56538cb33 > commit: afe956c577b2d5a3d9834e4424587c1ebcf90c4c kbuild: Enable -Wtautological-compare > date: 2 weeks ago > config: arm-tct_hammer_defconfig (attached as .config) > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2de52422acf04662b45599f77c14ce1b2cec2b81) > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # install arm cross compiling tool for clang build > # apt-get install binutils-arm-linux-gnueabi > git checkout afe956c577b2d5a3d9834e4424587c1ebcf90c4c > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot <lkp@...el.com> > > All warnings (new ones prefixed by >>): > > >> drivers/usb/gadget/udc/s3c2410_udc.c:255:11: warning: comparison of address of 'ep->queue' equal to a null pointer is always false [-Wtautological-pointer-compare] > if (&ep->queue == NULL) > ~~~~^~~~~ ~~~~ > 1 warning generated. Thank you, patch sent: https://lore.kernel.org/lkml/20200423162923.10886-1-natechancellor@gmail.com/ Cheers, Nathan
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