tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: 76d6b5957e108ece4df150bc00e0e8dc4cae732c commit: cf2f148bfd9515a92e134b15b2f2553f01dce504 [31/37] make VGA_MAP_MEM return pointer config: mips-randconfig-s031-20201130 (attached as .config) compiler: mips64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-170-g3bc348f6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commi... git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git git fetch --no-tags jirislaby devel git checkout cf2f148bfd9515a92e134b15b2f2553f01dce504 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips 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 >>)" command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition drivers/video/console/vgacon.c:322:23: sparse: expected unsigned short [usertype] *static [toplevel] vga_vram_base drivers/video/console/vgacon.c:322:23: sparse: got void [noderef] __iomem * drivers/video/console/vgacon.c:873:25: sparse: expected char *charmap drivers/video/console/vgacon.c:873:25: sparse: got void [noderef] __iomem * drivers/video/console/vgacon.c:876:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *charmap @@ got void [noderef] __iomem * @@ drivers/video/console/vgacon.c:876:25: sparse: expected char *charmap drivers/video/console/vgacon.c:876:25: sparse: got void [noderef] __iomem * drivers/video/console/vgacon.c: note: in included file (through include/linux/vt_buffer.h, include/linux/selection.h): arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:42:16: sparse: sparse: cast to restricted __le16 arch/mips/include/asm/vga.h:37:15: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:37:15: sparse: expected unsigned short volatile [usertype] arch/mips/include/asm/vga.h:37:15: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:47:21: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:47:21: sparse: expected unsigned short [usertype] arch/mips/include/asm/vga.h:47:21: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:47:21: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:47:21: sparse: expected unsigned short [usertype] arch/mips/include/asm/vga.h:47:21: sparse: got restricted __le16 [usertype] arch/mips/include/asm/vga.h:47:21: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@ arch/mips/include/asm/vga.h:47:21: sparse: expected unsigned short [usertype] arch/mips/include/asm/vga.h:47:21: sparse: got restricted __le16 [usertype] vim +322 drivers/video/console/vgacon.c 179 180 static const char *vgacon_startup(void) 181 { 182 const char *display_desc = NULL; 183 phys_addr_t vram_phys; 184 u16 saved1, saved2; 185 volatile u16 *p; 186 187 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB || 188 screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) { 189 no_vga: 190 #ifdef CONFIG_DUMMY_CONSOLE 191 conswitchp = &dummy_con; 192 return conswitchp->con_startup(); 193 #else 194 return NULL; 195 #endif 196 } 197 198 /* boot_params.screen_info reasonably initialized? */ 199 if ((screen_info.orig_video_lines == 0) || 200 (screen_info.orig_video_cols == 0)) 201 goto no_vga; 202 203 /* VGA16 modes are not handled by VGACON */ 204 if ((screen_info.orig_video_mode == 0x0D) || /* 320x200/4 */ 205 (screen_info.orig_video_mode == 0x0E) || /* 640x200/4 */ 206 (screen_info.orig_video_mode == 0x10) || /* 640x350/4 */ 207 (screen_info.orig_video_mode == 0x12) || /* 640x480/4 */ 208 (screen_info.orig_video_mode == 0x6A)) /* 800x600/4 (VESA) */ 209 goto no_vga; 210 211 vga_video_num_lines = screen_info.orig_video_lines; 212 vga_video_num_columns = screen_info.orig_video_cols; 213 vgastate.vgabase = NULL; 214 215 if (screen_info.orig_video_mode == 7) { 216 /* Monochrome display */ 217 vram_phys = 0xb0000; 218 vga_video_port_reg = VGA_CRT_IM; 219 vga_video_port_val = VGA_CRT_DM; 220 if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { 221 static struct resource ega_console_resource = 222 { .name = "ega", 223 .flags = IORESOURCE_IO, 224 .start = 0x3B0, 225 .end = 0x3BF }; 226 vga_video_type = VIDEO_TYPE_EGAM; 227 vga_vram_size = 0x8000; 228 display_desc = "EGA+"; 229 request_resource(&ioport_resource, 230 &ega_console_resource); 231 } else { 232 static struct resource mda1_console_resource = 233 { .name = "mda", 234 .flags = IORESOURCE_IO, 235 .start = 0x3B0, 236 .end = 0x3BB }; 237 static struct resource mda2_console_resource = 238 { .name = "mda", 239 .flags = IORESOURCE_IO, 240 .start = 0x3BF, 241 .end = 0x3BF }; 242 vga_video_type = VIDEO_TYPE_MDA; 243 vga_vram_size = 0x2000; 244 display_desc = "*MDA"; 245 request_resource(&ioport_resource, 246 &mda1_console_resource); 247 request_resource(&ioport_resource, 248 &mda2_console_resource); 249 vga_video_font_height = 14; 250 } 251 } else { 252 /* If not, it is color. */ 253 vga_can_do_color = true; 254 vram_phys = 0xb8000; 255 vga_video_port_reg = VGA_CRT_IC; 256 vga_video_port_val = VGA_CRT_DC; 257 if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { 258 int i; 259 260 vga_vram_size = 0x8000; 261 262 if (!screen_info.orig_video_isVGA) { 263 static struct resource ega_console_resource = 264 { .name = "ega", 265 .flags = IORESOURCE_IO, 266 .start = 0x3C0, 267 .end = 0x3DF }; 268 vga_video_type = VIDEO_TYPE_EGAC; 269 display_desc = "EGA"; 270 request_resource(&ioport_resource, 271 &ega_console_resource); 272 } else { 273 static struct resource vga_console_resource = 274 { .name = "vga+", 275 .flags = IORESOURCE_IO, 276 .start = 0x3C0, 277 .end = 0x3DF }; 278 vga_video_type = VIDEO_TYPE_VGAC; 279 display_desc = "VGA+"; 280 request_resource(&ioport_resource, 281 &vga_console_resource); 282 283 /* 284 * Normalise the palette registers, to point 285 * the 16 screen colours to the first 16 286 * DAC entries. 287 */ 288 289 for (i = 0; i < 16; i++) { 290 inb_p(VGA_IS1_RC); 291 outb_p(i, VGA_ATT_W); 292 outb_p(i, VGA_ATT_W); 293 } 294 outb_p(0x20, VGA_ATT_W); 295 296 /* 297 * Now set the DAC registers back to their 298 * default values 299 */ 300 for (i = 0; i < 16; i++) { 301 outb_p(color_table[i], VGA_PEL_IW); 302 outb_p(default_red[i], VGA_PEL_D); 303 outb_p(default_grn[i], VGA_PEL_D); 304 outb_p(default_blu[i], VGA_PEL_D); 305 } 306 } 307 } else { 308 static struct resource cga_console_resource = 309 { .name = "cga", 310 .flags = IORESOURCE_IO, 311 .start = 0x3D4, 312 .end = 0x3D5 }; 313 vga_video_type = VIDEO_TYPE_CGA; 314 vga_vram_size = 0x2000; 315 display_desc = "*CGA"; 316 request_resource(&ioport_resource, 317 &cga_console_resource); 318 vga_video_font_height = 8; 319 } 320 } 321 323 vga_vram_end = (void *)vga_vram_base + vga_vram_size; 324 325 /* 326 * Find out if there is a graphics card present. 327 * Are there smarter methods around? 328 */ 329 p = (volatile u16 *) vga_vram_base; 330 saved1 = scr_readw(p); 331 saved2 = scr_readw(p + 1); 332 scr_writew(0xAA55, p); 333 scr_writew(0x55AA, p + 1); 334 if (scr_readw(p) != 0xAA55 || scr_readw(p + 1) != 0x55AA) { 335 scr_writew(saved1, p); 336 scr_writew(saved2, p + 1); 337 goto no_vga; 338 } 339 scr_writew(0x55AA, p); 340 scr_writew(0xAA55, p + 1); 341 if (scr_readw(p) != 0x55AA || scr_readw(p + 1) != 0xAA55) { 342 scr_writew(saved1, p); 343 scr_writew(saved2, p + 1); 344 goto no_vga; 345 } 346 scr_writew(saved1, p); 347 scr_writew(saved2, p + 1); 348 349 if (vga_video_type == VIDEO_TYPE_EGAC 350 || vga_video_type == VIDEO_TYPE_VGAC 351 || vga_video_type == VIDEO_TYPE_EGAM) { 352 vga_hardscroll_enabled = vga_hardscroll_user_enable; 353 vga_default_font_height = screen_info.orig_video_points; 354 vga_video_font_height = screen_info.orig_video_points; 355 /* This may be suboptimal but is a safe bet - go with it */ 356 vga_scan_lines = 357 vga_video_font_height * vga_video_num_lines; 358 } 359 360 vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH; 361 vgacon_yres = vga_scan_lines; 362 363 vga_init_done = true; 364 365 return display_desc; 366 } 367 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org