[kbuild-all] [skn:v5.8/psa_ffa 2/2] drivers/firmware/arm_psa_ffa/driver.c:146:1: warning: no previous prototype for '__arm_psa_ffa_fn_smc'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git v5.8/psa_ffa head: b483443526c98fa26aa37e66ac01d40407974824 commit: b483443526c98fa26aa37e66ac01d40407974824 [2/2] firmware: Add support for PSA FF-A transport for VM partitions config: arm64-allyesconfig (attached as .config) compiler: aarch64-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 b483443526c98fa26aa37e66ac01d40407974824 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 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 <<): 146 | __arm_psa_ffa_fn_smc(unsigned long function_id,unsigned long arg0, | ^~~~~~~~~~~~~~~~~~~~ 160 | __arm_psa_ffa_fn_hvc(unsigned long function_id,unsigned long arg0, | ^~~~~~~~~~~~~~~~~~~~ drivers/firmware/arm_psa_ffa/driver.c: In function 'psa_ffa_init': 460 | ret = psa_ffa_rxtx_map(__virt_to_phys(drv_info->tx_buffer), | ~~~~~~~~^~~~~~~~~~~ | | | void * In file included from arch/arm64/include/asm/thread_info.h:17, from include/linux/thread_info.h:38, from arch/arm64/include/asm/preempt.h:5, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from drivers/firmware/arm_psa_ffa/driver.c:28: arch/arm64/include/asm/memory.h:253:49: note: expected 'long unsigned int' but argument is of type 'void *' 253 | extern phys_addr_t __virt_to_phys(unsigned long x); | ~~~~~~~~~~~~~~^ drivers/firmware/arm_psa_ffa/driver.c:461:34: warning: passing argument 1 of '__virt_to_phys' makes integer from pointer without a cast [-Wint-conversion] 461 | __virt_to_phys(drv_info->rx_buffer), | ~~~~~~~~^~~~~~~~~~~ | | | void * In file included from arch/arm64/include/asm/thread_info.h:17, from include/linux/thread_info.h:38, from arch/arm64/include/asm/preempt.h:5, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from drivers/firmware/arm_psa_ffa/driver.c:28: arch/arm64/include/asm/memory.h:253:49: note: expected 'long unsigned int' but argument is of type 'void *' 253 | extern phys_addr_t __virt_to_phys(unsigned long x); | ~~~~~~~~~~~~~~^ At top level: drivers/firmware/arm_psa_ffa/driver.c:325:12: warning: 'ffa_msg_send_direct_req' defined but not used [-Wunused-function] 325 | static int ffa_msg_send_direct_req(u16 src_id, u16 dst_id) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/firmware/arm_psa_ffa/driver.c:311:1: warning: 'psa_ffa_msg_send' defined but not used [-Wunused-function] 311 | psa_ffa_msg_send(u16 src_id, u16 dst_id, u32 len, u32 flags, u32 vcpu) | ^~~~~~~~~~~~~~~~ drivers/firmware/arm_psa_ffa/driver.c:209:12: warning: 'psa_ffa_features' defined but not used [-Wunused-function] 209 | static int psa_ffa_features(u32 func_id) | ^~~~~~~~~~~~~~~~ vim +/__arm_psa_ffa_fn_smc +146 drivers/firmware/arm_psa_ffa/driver.c 144 145 struct arm_smccc_v1_2_res 147 unsigned long arg1, unsigned long arg2, 148 unsigned long arg3, unsigned long arg4, 149 unsigned long arg5, unsigned long arg6) 150 { 151 struct arm_smccc_v1_2_res res; 152 153 arm_smccc_v1_2_smc(function_id, arg0, arg1, arg2, arg3, arg4, arg5, 154 arg6, &res); 155 156 return res; 157 } 158 159 struct arm_smccc_v1_2_res 161 unsigned long arg1, unsigned long arg2, 162 unsigned long arg3, unsigned long arg4, 163 unsigned long arg5, unsigned long arg6) 164 { 165 struct arm_smccc_v1_2_res res; 166 167 arm_smccc_v1_2_hvc(function_id, arg0, arg1, arg2, arg3, arg4, arg5, 168 arg6, &res); 169 return res; 170 } 171 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org