tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 46064348cc445799cf9e8fd030323a0426fbb5e4 commit: bcb311924fa97b123317ec1d4d4ccce77199c9d2 [1613/1613] LoongArch: add loongson SE SDF support config: loongarch-randconfig-r111-20241210 (https://download.01.org/0day-ci/archive/20241218/202412181438.CJxz4kpl-lkp@i...) compiler: loongarch64-linux-gcc (GCC) 14.2.0 reproduce: (https://download.01.org/0day-ci/archive/20241218/202412181438.CJxz4kpl-lkp@i...) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202412181438.CJxz4kpl-lkp@intel.com/ sparse warnings: (new ones prefixed by >>)

...

drivers/char/lsse_sdf_cdev.c:198:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got char const *buf @@ drivers/char/lsse_sdf_cdev.c:198:62: sparse: expected void const [noderef] __user *from drivers/char/lsse_sdf_cdev.c:198:62: sparse: got char const *buf drivers/char/lsse_sdf_cdev.c:239:32: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected char const *buf @@ got char const [noderef] __user *buf @@ drivers/char/lsse_sdf_cdev.c:239:32: sparse: expected char const *buf drivers/char/lsse_sdf_cdev.c:239:32: sparse: got char const [noderef] __user *buf drivers/char/lsse_sdf_cdev.c:248:50: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected char *buf @@ got char [noderef] __user *buf @@ drivers/char/lsse_sdf_cdev.c:248:50: sparse: expected char *buf drivers/char/lsse_sdf_cdev.c:248:50: sparse: got char [noderef] __user *buf drivers/char/lsse_sdf_cdev.c:345:30: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct miscdevice *misc @@ got struct miscdevice const * @@ drivers/char/lsse_sdf_cdev.c:345:30: sparse: expected struct miscdevice *misc drivers/char/lsse_sdf_cdev.c:345:30: sparse: got struct miscdevice const * drivers/char/lsse_sdf_cdev.c:361:26: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct miscdevice *misc @@ got struct miscdevice const * @@ drivers/char/lsse_sdf_cdev.c:361:26: sparse: expected struct miscdevice *misc drivers/char/lsse_sdf_cdev.c:361:26: sparse: got struct miscdevice const * drivers/char/lsse_sdf_cdev.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/slab.h): include/linux/page-flags.h:244:46: sparse: sparse: self-comparison always evaluates to false -- drivers/char/loongson_se.c:558:30: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct miscdevice *misc @@ got struct miscdevice const * @@ drivers/char/loongson_se.c:558:30: sparse: expected struct miscdevice *misc drivers/char/loongson_se.c:558:30: sparse: got struct miscdevice const * drivers/char/loongson_se.c:581:26: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct miscdevice *misc @@ got struct miscdevice const * @@ drivers/char/loongson_se.c:581:26: sparse: expected struct miscdevice *misc drivers/char/loongson_se.c:581:26: sparse: got struct miscdevice const * drivers/char/loongson_se.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, include/linux/kmod.h, ...): include/linux/page-flags.h:244:46: sparse: sparse: self-comparison always evaluates to false

vim +198 drivers/char/lsse_sdf_cdev.c 170 171 static int lsse_sdf_send(struct sdf_file_pvt_data *pvt, const char *buf, 172 size_t count, int user) 173 { 174 int ret, se_ret; 175 struct sdf_handle *ph = NULL; 176 struct sdf_kernel_command *skc; 177 struct lsse_sdf_dev *se = pvt->se; 178 179 if (!se->se_ch->smsg) { 180 pr_err("se device is not ready\n"); 181 return 0; 182 } 183 184 if (count > se->se_ch->data_size) { 185 pr_err("Invalid size in send: count=%zd, size=%d\n", 186 count, se->se_ch->data_size); 187 return -EIO; 188 } 189 190 if (user) { 191 ret = mutex_lock_interruptible(&se->data_lock); 192 if (ret) 193 goto out; 194 } else 195 mutex_lock(&se->data_lock); 196 197 if (user) {

198 ret = copy_from_user(se->se_ch->data_buffer, buf, count); 199 if (ret) { 200 ret = -EFAULT; 201 goto out_unlock; 202 } 203 skc = (struct sdf_kernel_command *)se->se_ch->data_buffer; 204 if (skc->header.command == SDF_CLOSESESSION) 205 ph = find_sdf_handle(skc->handle, pvt); 206 } else 207 memcpy(se->se_ch->data_buffer, buf, count); 208 209 se->processing_cmd = true; 210 ret = se_send_sdf_cmd(se, count, 5); 211 if (ret) { 212 pr_err("se_send_sdf_cmd failed\n"); 213 goto out_unlock; 214 } 215 216 ret = lsse_sdf_recv(pvt, (char *)buf, 0, user, &se_ret); 217 if (ret) { 218 pr_err("recv failed ret: %x\n", ret); 219 goto out_unlock; 220 } 221 if (ph && !se_ret) { 222 list_del(&ph->handle_list); 223 kfree(ph); 224 } 225 out_unlock: 226 mutex_unlock(&se->data_lock); 227 out: 228 return ret; 229 } 230 231 static ssize_t lsse_sdf_write(struct file *filp, const char __user *buf, 232 size_t cnt, loff_t *offt) 233 { 234 struct sdf_file_pvt_data *pvt = filp->private_data; 235 236 if (cnt > SE_SDF_BUFSIZE) 237 return -E2BIG; 238 239 if (lsse_sdf_send(pvt, buf, cnt, 1)) 240 return -EFAULT; 241 242 return cnt; 243 } 244 245 static ssize_t lsse_sdf_read(struct file *filp, char __user *buf, 246 size_t size, loff_t *off) 247 { 248 return lsse_sdf_recv(filp->private_data, buf, size, 1, NULL); 249 } 250 251 static int close_one_handle(struct sdf_file_pvt_data *pvt, struct sdf_handle *ph) 252 { 253 struct sdf_kernel_command *skc = &pvt->skc; 254 255 skc->header.command = 0x205; 256 skc->header.u.param_cnt = 1; 257 skc->header.param_len[0] = 8; 258 skc->handle = ph->handle; 259 /* close one session */ 260 lsse_sdf_send(pvt, (char *)&pvt->skc, KERNEL_COMMAND_SIZE, 0); 261 if (skc->header.u.ret) { 262 pr_err("Auto Close Session failed, session handle: %llx, ret: %d\n", 263 (u64)ph->handle, skc->header.u.ret); 264 return skc->header.u.ret; 265 } 266 kfree(ph); 267 268 return 0; 269 } 270 271 static int close_all_handle(struct sdf_file_pvt_data *pvt) 272 { 273 int ret = 0; 274 struct sdf_handle *ph, *tmp; 275 276 list_for_each_entry_safe(ph, tmp, &pvt->handle_list, handle_list) { 277 list_del(&ph->handle_list); 278 ret = close_one_handle(pvt, ph); 279 if (ret) 280 return ret; 281 } 282 283 return 0; 284 } 285 286 static int lsse_sdf_release(struct inode *inode, struct file *filp) 287 { 288 int ret; 289 struct sdf_file_pvt_data *pvt = filp->private_data; 290 291 ret = close_all_handle(pvt); 292 filp->private_data = NULL; 293 kfree(pvt); 294 295 if (ret) 296 ret = -EFAULT; 297 return ret; 298 } 299 300 static int lsse_sdf_open(struct inode *inode, struct file *filp) 301 { 302 struct sdf_file_pvt_data *pvt = kmalloc(sizeof(*pvt), GFP_KERNEL); 303 304 if (!pvt) 305 return -ENOMEM; 306 307 INIT_LIST_HEAD(&pvt->handle_list); 308 pvt->se = se_sdf_dev; 309 filp->private_data = pvt; 310 311 return 0; 312 } 313 314 static const struct file_operations lsse_sdf_fops = { 315 .owner = THIS_MODULE, 316 .open = lsse_sdf_open, 317 .write = lsse_sdf_write, 318 .read = lsse_sdf_read, 319 .release = lsse_sdf_release, 320 }; 321 322 static const struct miscdevice lsse_sdf_miscdev = { 323 .minor = MISC_DYNAMIC_MINOR, 324 .name = "lsse_sdf", 325 .fops = &lsse_sdf_fops, 326 }; 327 328 static int lsse_sdf_probe(struct platform_device *pdev) 329 { 330 int msg_size; 331 int ret; 332 333 se_sdf_dev = kzalloc(sizeof(*se_sdf_dev), GFP_KERNEL); 334 if (IS_ERR_OR_NULL(se_sdf_dev)) 335 return PTR_ERR(se_sdf_dev); 336 337 mutex_init(&se_sdf_dev->data_lock); 338 init_waitqueue_head(&se_sdf_dev->wq); 339 se_sdf_dev->processing_cmd = false; 340 341 msg_size = 2 * sizeof(struct se_sdf_msg); 342 se_sdf_dev->se_ch = se_init_ch(SE_CH_SDF, SE_SDF_BUFSIZE, msg_size, 343 se_sdf_dev, lsse_sdf_complete); 344 345 ret = misc_register(&lsse_sdf_miscdev); 346 if (ret < 0) { 347 pr_err("register sdf dev failed!\n"); 348 goto out; 349 } 350 351 return 0; 352 353 out: 354 kfree(se_sdf_dev); 355 356 return ret; 357 } 358

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki