Hi Jeffrey, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.14-rc7 next-20210826] [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/Jeffrey-Hugo/bus-mhi-core-Use-cached-values-for-calculating-the-shared-write-pointer/20210827-010402 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 73f3af7b4611d77bdaea303fb639333eb28e37d7 config: riscv-randconfig-r042-20210826 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project ea08c4cd1c0869ec5024a8bb3f5cdf06ab03ae83) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/82f8b573ef9eb6f068ed842f7ce1009c6bd5b63e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jeffrey-Hugo/bus-mhi-core-Use-cached-values-for-calculating-the-shared-write-pointer/20210827-010402 git checkout 82f8b573ef9eb6f068ed842f7ce1009c6bd5b63e # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/bus/mhi/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): >> drivers/bus/mhi/core/main.c:542:50: error: use of undeclared identifier 'ring_base'; did you mean 'pfn_base'? *ring->ctxt_wp = ring->iommu_base + (ring->wp - ring_base); ^~~~~~~~~ pfn_base arch/riscv/include/asm/page.h:82:22: note: 'pfn_base' declared here extern unsigned long pfn_base; ^ >> drivers/bus/mhi/core/main.c:542:17: warning: incompatible pointer to integer conversion assigning to 'u64' (aka 'unsigned long long') from 'void *' [-Wint-conversion] *ring->ctxt_wp = ring->iommu_base + (ring->wp - ring_base); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. vim +542 drivers/bus/mhi/core/main.c 532 533 static void mhi_recycle_ev_ring_element(struct mhi_controller *mhi_cntrl, 534 struct mhi_ring *ring) 535 { 536 /* Update the WP */ 537 ring->wp += ring->el_size; 538 539 if (ring->wp >= (ring->base + ring->len)) 540 ring->wp = ring->base; 541 > 542 *ring->ctxt_wp = ring->iommu_base + (ring->wp - ring_base); 543 544 /* Update the RP */ 545 ring->rp += ring->el_size; 546 if (ring->rp >= (ring->base + ring->len)) 547 ring->rp = ring->base; 548 549 /* Update to all cores */ 550 smp_wmb(); 551 } 552 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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