Hi Bhaumik, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20210818] [cannot apply to linus/master v5.14-rc6 v5.14-rc5 v5.14-rc4 v5.14-rc6] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Bhaumik-Bhatt/MHI-MMIO-register-write-updates/20210819-075312 base: f26c3abc432a2026ba9ee7767061a1f88aead6ec config: arm64-randconfig-r025-20210818 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce) 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://github.com/0day-ci/linux/commit/034c38ae851193cbeec4b4538d1a47e75198b92a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Bhaumik-Bhatt/MHI-MMIO-register-write-updates/20210819-075312 git checkout 034c38ae851193cbeec4b4538d1a47e75198b92a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/bus/mhi/core/pm.c:133:3: warning: ignoring return value of function declared with 'warn_unused_result' attribute [-Wunused-result] mhi_write_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, ^~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:136:3: warning: ignoring return value of function declared with 'warn_unused_result' attribute [-Wunused-result] mhi_write_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, ^~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated. vim +/warn_unused_result +133 drivers/bus/mhi/core/pm.c a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 129 a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 130 void mhi_set_mhi_state(struct mhi_controller *mhi_cntrl, enum mhi_state state) a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 131 { a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 132 if (state == MHI_STATE_RESET) { a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 @133 mhi_write_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 134 MHICTRL_RESET_MASK, MHICTRL_RESET_SHIFT, 1); a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 135 } else { a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 136 mhi_write_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 137 MHICTRL_MHISTATE_MASK, a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 138 MHICTRL_MHISTATE_SHIFT, state); a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 139 } a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 140 } a6e2e3522f2914 Manivannan Sadhasivam 2020-02-20 141 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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