tree: https://github.com/Xilinx/linux-xlnx master head: 319e5bc767fe351a63744daa9cdd69b1915956d0 commit: e24d5dbb603552c4cb9c9e946c78055a60f83d85 [12/20] misc: ai-engine: Add FPGA bridge to AI engine partition config: alpha-allyesconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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 git checkout e24d5dbb603552c4cb9c9e946c78055a60f83d85 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/misc/xilinx-ai-engine/ai-engine-fpga.c: In function 'aie_fpga_bridge_enable_set': 21 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-fpga.c: In function 'aie_fpga_bridge_enable_show': drivers/misc/xilinx-ai-engine/ai-engine-fpga.c:35:2: warning: ignoring return value of 'mutex_lock_interruptible', declared with attribute warn_unused_result [-Wunused-result] 35 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/mutex_lock_interruptible +21 drivers/misc/xilinx-ai-engine/ai-engine-fpga.c 9 10 static int aie_fpga_bridge_enable_set(struct fpga_bridge *bridge, bool enable) 11 { 12 struct aie_partition *apart = bridge->priv; 13 14 /* 15 * TBD: 16 * "Enable" should enable the SHIM tile configuration. 17 * "Disable" should should disable SHIM DMAs, and wait 18 * until SHIM DMA stops, and disable SHIM 19 * to PL streams within partition. 20 */ 22 if (enable) 23 apart->status |= XAIE_PART_STATUS_BRIDGE_ENABLED; 24 else 25 apart->status &= ~XAIE_PART_STATUS_BRIDGE_ENABLED; 26 mutex_unlock(&apart->mlock); 27 return 0; 28 } 29 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org