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Subject[avpatel:riscv_kvm_aia_v1 30/42] drivers/irqchip/irq-riscv-imsic.c:142:30: warning: variable 'global' set but not used
tree:   https://github.com/avpatel/linux.git riscv_kvm_aia_v1
head: 6fa93cde61f5f84422bd3f97b9db6e2406a344dd
commit: 608f1fa0b6d8185a467e90300c3279f63214e7b7 [30/42] irqchip: Add RISC-V incoming MSI controller driver
config: riscv-randconfig-r042-20211231 (https://download.01.org/0day-ci/archive/20211231/202112311701.yUVrwIaS-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7cd109b92c72855937273a6c8ab19016fbe27d33)
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/avpatel/linux/commit/608f1fa0b6d8185a467e90300c3279f63214e7b7
git remote add avpatel https://github.com/avpatel/linux.git
git fetch --no-tags avpatel riscv_kvm_aia_v1
git checkout 608f1fa0b6d8185a467e90300c3279f63214e7b7
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/irqchip/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-riscv-imsic.c:142:30: warning: variable 'global' set but not used [-Wunused-but-set-variable]
struct imsic_global_config *global;
^
drivers/irqchip/irq-riscv-imsic.c:138:22: warning: unused function 'imsic_cpu_page_virt' [-Wunused-function]
static void __iomem *imsic_cpu_page_virt(unsigned int cpu,
^
2 warnings generated.


vim +/global +142 drivers/irqchip/irq-riscv-imsic.c

137
138 static void __iomem *imsic_cpu_page_virt(unsigned int cpu,
139 unsigned int guest_index)
140 {
141 struct imsic_handler *handler = per_cpu_ptr(&imsic_handlers, cpu);
> 142 struct imsic_global_config *global;
143 struct imsic_local_config *local;
144
145 if (!handler || !handler->priv)
146 return NULL;
147 local = &handler->local;
148 global = &handler->priv->global;
149
150 return local->msi_va + (guest_index * IMSIC_MMIO_PAGE_SZ);
151 }
152

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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