[kbuild-all] drivers/firmware/meson/meson_sm.c:168:34: sparse: sparse: incorrect type in argument 2 (different address spaces)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b29482fde649c72441d5478a4ea2c52c56d97a5e commit: 8cde3c2153e8f57be884c0e73f18bc4de150e870 firmware: meson_sm: Rework driver as a proper platform driver date: 8 months ago config: arm64-randconfig-s031-20200611 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-250-g42323db3-dirty git checkout 8cde3c2153e8f57be884c0e73f18bc4de150e870 # save the attached .config to linux build tree make W=1 C=1 ARCH=arm64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/firmware/meson/meson_sm.c:83:24: sparse: sparse: Using plain integer as NULL pointer drivers/firmware/meson/meson_sm.c:168:34: sparse: expected void const *q drivers/firmware/meson/meson_sm.c:204:18: sparse: expected void *p vim +168 drivers/firmware/meson/meson_sm.c 76 77 static void __iomem *meson_sm_map_shmem(u32 cmd_shmem, unsigned int size) 78 { 79 u32 sm_phy_base; 80 81 sm_phy_base = __meson_sm_call(cmd_shmem, 0, 0, 0, 0, 0); 82 if (!sm_phy_base) 84 85 return ioremap_cache(sm_phy_base, size); 86 } 87 88 /** 89 * meson_sm_call - generic SMC32 call to the secure-monitor 90 * 91 * @fw: Pointer to secure-monitor firmware 92 * @cmd_index: Index of the SMC32 function ID 93 * @ret: Returned value 94 * @arg0: SMC32 Argument 0 95 * @arg1: SMC32 Argument 1 96 * @arg2: SMC32 Argument 2 97 * @arg3: SMC32 Argument 3 98 * @arg4: SMC32 Argument 4 99 * 100 * Return: 0 on success, a negative value on error 101 */ 102 int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index, 103 u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4) 104 { 105 u32 cmd, lret; 106 107 if (!fw->chip) 108 return -ENOENT; 109 110 cmd = meson_sm_get_cmd(fw->chip, cmd_index); 111 if (!cmd) 112 return -EINVAL; 113 114 lret = __meson_sm_call(cmd, arg0, arg1, arg2, arg3, arg4); 115 116 if (ret) 117 *ret = lret; 118 119 return 0; 120 } 121 EXPORT_SYMBOL(meson_sm_call); 122 123 /** 124 * meson_sm_call_read - retrieve data from secure-monitor 125 * 126 * @fw: Pointer to secure-monitor firmware 127 * @buffer: Buffer to store the retrieved data 128 * @bsize: Size of the buffer 129 * @cmd_index: Index of the SMC32 function ID 130 * @arg0: SMC32 Argument 0 131 * @arg1: SMC32 Argument 1 132 * @arg2: SMC32 Argument 2 133 * @arg3: SMC32 Argument 3 134 * @arg4: SMC32 Argument 4 135 * 136 * Return: size of read data on success, a negative value on error 137 * When 0 is returned there is no guarantee about the amount of 138 * data read and bsize bytes are copied in buffer. 139 */ 140 int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer, 141 unsigned int bsize, unsigned int cmd_index, u32 arg0, 142 u32 arg1, u32 arg2, u32 arg3, u32 arg4) 143 { 144 u32 size; 145 int ret; 146 147 if (!fw->chip) 148 return -ENOENT; 149 150 if (!fw->chip->cmd_shmem_out_base) 151 return -EINVAL; 152 153 if (bsize > fw->chip->shmem_size) 154 return -EINVAL; 155 156 if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0) 157 return -EINVAL; 158 159 if (size > bsize) 160 return -EINVAL; 161 162 ret = size; 163 164 if (!size) 165 size = bsize; 166 167 if (buffer) 169 170 return ret; 171 } 172 EXPORT_SYMBOL(meson_sm_call_read); 173 174 /** 175 * meson_sm_call_write - send data to secure-monitor 176 * 177 * @fw: Pointer to secure-monitor firmware 178 * @buffer: Buffer containing data to send 179 * @size: Size of the data to send 180 * @cmd_index: Index of the SMC32 function ID 181 * @arg0: SMC32 Argument 0 182 * @arg1: SMC32 Argument 1 183 * @arg2: SMC32 Argument 2 184 * @arg3: SMC32 Argument 3 185 * @arg4: SMC32 Argument 4 186 * 187 * Return: size of sent data on success, a negative value on error 188 */ 189 int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer, 190 unsigned int size, unsigned int cmd_index, u32 arg0, 191 u32 arg1, u32 arg2, u32 arg3, u32 arg4) 192 { 193 u32 written; 194 195 if (!fw->chip) 196 return -ENOENT; 197 198 if (size > fw->chip->shmem_size) 199 return -EINVAL; 200 201 if (!fw->chip->cmd_shmem_in_base) 202 return -EINVAL; 203 205 206 if (meson_sm_call(fw, cmd_index, &written, arg0, arg1, arg2, arg3, arg4) < 0) 207 return -EINVAL; 208 209 if (!written) 210 return -EINVAL; 211 212 return written; 213 } 214 EXPORT_SYMBOL(meson_sm_call_write); 215 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org