On Wed, Oct 19, 2022 at 1:55 AM Kalle Valo <kvalo@xxxxxxxxxx> wrote: > > + jason, linux-wireless > > kernel test robot <lkp@xxxxxxxxx> writes: > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > head: aae703b02f92bde9264366c545e87cec451de471 > > commit: dab902fe1d29dc0fa1dccc8d13dc89ffbf633881 wifi: rt2x00: add TX > > LOFT calibration for MT7620 > > date: 4 weeks ago > > config: arm64-allmodconfig > > compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project > > 791a7ae1ba3efd6bca96338e10ffde557ba83920) > > reproduce (this is a W=1 build): > > wget > > https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross > > -O ~/bin/make.cross > > chmod +x ~/bin/make.cross > > # install arm64 cross compiling tool for clang build > > # apt-get install binutils-aarch64-linux-gnu > > # > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dab902fe1d29dc0fa1dccc8d13dc89ffbf633881 > > git remote add linus > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > git fetch --no-tags linus master > > git checkout dab902fe1d29dc0fa1dccc8d13dc89ffbf633881 > > # save the config file > > mkdir build_dir && cp config build_dir/.config > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 > > O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ > > drivers/net/wireless/ralink/rt2x00/ drivers/staging/media/ > > > > If you fix the issue, kindly add following tag where applicable > > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > > All warnings (new ones prefixed by >>): > > > >>> drivers/net/wireless/ralink/rt2x00/rt2800lib.c:9439:15: warning: > >> result of comparison of constant -7 with expression of type 'char' > >> is always false [-Wtautological-constant-out-of-range-compare] > > gerr = (gerr < -0x07) ? -0x07 : (gerr > 0x05) ? 0x05 : gerr; > > ~~~~ ^ ~~~~~ > > drivers/net/wireless/ralink/rt2x00/rt2800lib.c:9443:15: warning: result of comparison of constant -31 with expression of type 'char' is always false [-Wtautological-constant-out-of-range-compare] > > perr = (perr < -0x1f) ? -0x1f : (perr > 0x1d) ? 0x1d : perr; > > ~~~~ ^ ~~~~~ > > 2 warnings generated. > > I believe this patch should fix it: > > https://patchwork.kernel.org/project/linux-wireless/patch/20221018202734.140489-1-Jason@xxxxxxxxx/ > > Jason, is my understanding correct? That's a different bug caused by the same pitfall: assuming char is signed. I'll send a patch for that function too. Jason
