Hi Maciej, [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v4.13-rc4 next-20170811] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Maciej-S-Szmigiero/Add-analog-mode-support-for-Medion-MD95700/20170813-041742 base: git://linuxtv.org/media_tree.git master config: tile-allyesconfig (attached as .config) compiler: tilegx-linux-gcc (GCC) 4.6.2 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=tile All warnings (new ones prefixed by >>): drivers/media//usb/dvb-usb/cxusb-analog.c: In function 'cxusb_medion_copy_field': >> drivers/media//usb/dvb-usb/cxusb-analog.c:359:27: warning: comparison of distinct pointer types lacks a cast [enabled by default] >> drivers/media//usb/dvb-usb/cxusb-analog.c:359:27: warning: comparison of distinct pointer types lacks a cast [enabled by default] vim +359 drivers/media//usb/dvb-usb/cxusb-analog.c 198 199 static bool cxusb_medion_copy_field(struct dvb_usb_device *dvbdev, 200 struct cxusb_medion_auxbuf *auxbuf, 201 struct cxusb_bt656_params *bt656, 202 bool firstfield, 203 unsigned int maxlines, 204 unsigned int maxlinesamples) 205 { 206 while (bt656->line < maxlines && 207 !cxusb_auxbuf_isend(auxbuf, bt656->pos)) { 208 209 unsigned char val; 210 211 if (!cxusb_auxbuf_copy(auxbuf, bt656->pos, &val, 1)) 212 return false; 213 214 if ((char)val == CXUSB_BT656_COMMON[0]) { 215 char buf[3]; 216 217 if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1, 218 buf, 3)) 219 return false; 220 221 if (buf[0] != (CXUSB_BT656_COMMON)[1] || 222 buf[1] != (CXUSB_BT656_COMMON)[2]) 223 goto normal_sample; 224 225 if (bt656->line != 0 && (!!firstfield != 226 ((buf[2] & CXUSB_FIELD_MASK) 227 == CXUSB_FIELD_1))) { 228 if (bt656->fmode == LINE_SAMPLES) { 229 cxusb_vprintk(dvbdev, BT656, 230 "field %c after line %u field change\n", 231 firstfield ? '1' : '2', 232 bt656->line); 233 234 if (bt656->buf != NULL && 235 maxlinesamples - 236 bt656->linesamples > 0) { 237 238 memset(bt656->buf, 0, 239 maxlinesamples - 240 bt656->linesamples); 241 242 bt656->buf += 243 maxlinesamples - 244 bt656->linesamples; 245 246 cxusb_vprintk(dvbdev, BT656, 247 "field %c line %u %u samples still remaining (of %u)\n", 248 firstfield ? 249 '1' : '2', 250 bt656->line, 251 maxlinesamples - 252 bt656-> 253 linesamples, 254 maxlinesamples); 255 } 256 257 bt656->line++; 258 } 259 260 if (maxlines - bt656->line > 0 && 261 bt656->buf != NULL) { 262 memset(bt656->buf, 0, 263 (maxlines - bt656->line) 264 * maxlinesamples); 265 266 bt656->buf += 267 (maxlines - bt656->line) 268 * maxlinesamples; 269 270 cxusb_vprintk(dvbdev, BT656, 271 "field %c %u lines still remaining (of %u)\n", 272 firstfield ? '1' : '2', 273 maxlines - bt656->line, 274 maxlines); 275 } 276 277 return true; 278 } 279 280 if (bt656->fmode == START_SEARCH) { 281 if ((buf[2] & CXUSB_SEAV_MASK) == 282 CXUSB_SEAV_SAV && 283 (!!firstfield == ((buf[2] & 284 CXUSB_FIELD_MASK) 285 == CXUSB_FIELD_1))) { 286 287 if ((buf[2] & CXUSB_VBI_MASK) == 288 CXUSB_VBI_OFF) { 289 cxusb_vprintk(dvbdev, 290 BT656, 291 "line start @ pos %x\n", 292 bt656->pos); 293 294 bt656->linesamples = 0; 295 bt656->fmode = LINE_SAMPLES; 296 } else { 297 cxusb_vprintk(dvbdev, 298 BT656, 299 "VBI start @ pos %x\n", 300 bt656->pos); 301 302 bt656->fmode = VBI_SAMPLES; 303 } 304 } 305 306 bt656->pos = 307 cxusb_auxbuf_advance(auxbuf, 308 bt656->pos, 4); 309 continue; 310 } else if (bt656->fmode == LINE_SAMPLES) { 311 if ((buf[2] & CXUSB_SEAV_MASK) == 312 CXUSB_SEAV_SAV) 313 cxusb_vprintk(dvbdev, BT656, 314 "SAV in line samples @ line %u, pos %x\n", 315 bt656->line, bt656->pos); 316 317 if (bt656->buf != NULL && maxlinesamples - 318 bt656->linesamples > 0) { 319 320 memset(bt656->buf, 0, 321 maxlinesamples - 322 bt656->linesamples); 323 bt656->buf += maxlinesamples - 324 bt656->linesamples; 325 326 cxusb_vprintk(dvbdev, BT656, 327 "field %c line %u %u samples still remaining (of %u)\n", 328 firstfield ? '1' : '2', 329 bt656->line, 330 maxlinesamples - 331 bt656->linesamples, 332 maxlinesamples); 333 } 334 335 336 bt656->fmode = START_SEARCH; 337 bt656->line++; 338 continue; 339 } else if (bt656->fmode == VBI_SAMPLES) { 340 if ((buf[2] & CXUSB_SEAV_MASK) == 341 CXUSB_SEAV_SAV) 342 cxusb_vprintk(dvbdev, BT656, 343 "SAV in VBI samples @ pos %x\n", 344 bt656->pos); 345 346 bt656->fmode = START_SEARCH; 347 continue; 348 } 349 350 bt656->pos = 351 cxusb_auxbuf_advance(auxbuf, bt656->pos, 4); 352 continue; 353 } 354 355 normal_sample: 356 if (bt656->fmode == START_SEARCH && bt656->line != 0) { 357 unsigned char buf[64]; 358 unsigned int idx; > 359 unsigned int tocheck = min(sizeof(buf), 360 max(sizeof(buf), 361 maxlinesamples / 4)); 362 363 if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1, 364 buf, tocheck)) { 365 bt656->pos = 366 cxusb_auxbuf_advance(auxbuf, 367 bt656->pos, 1); 368 continue; 369 } 370 371 for (idx = 0; idx <= tocheck - 3; idx++) 372 if (memcmp(buf + idx, CXUSB_BT656_COMMON, 3) 373 == 0) 374 break; 375 376 if (idx <= tocheck - 3) { 377 bt656->pos = 378 cxusb_auxbuf_advance(auxbuf, 379 bt656->pos, 1); 380 continue; 381 } 382 383 cxusb_vprintk(dvbdev, BT656, 384 "line %u early start, pos %x\n", 385 bt656->line, bt656->pos); 386 387 bt656->linesamples = 0; 388 bt656->fmode = LINE_SAMPLES; 389 continue; 390 } else if (bt656->fmode == LINE_SAMPLES) { 391 if (bt656->buf != NULL) 392 *(bt656->buf++) = val; 393 394 bt656->linesamples++; 395 bt656->pos = 396 cxusb_auxbuf_advance(auxbuf, 397 bt656->pos, 1); 398 399 if (bt656->linesamples >= maxlinesamples) { 400 bt656->fmode = START_SEARCH; 401 bt656->line++; 402 } 403 404 continue; 405 } 406 /* TODO: copy VBI samples */ 407 408 bt656->pos = 409 cxusb_auxbuf_advance(auxbuf, 410 bt656->pos, 1); 411 } 412 413 if (bt656->line < maxlines) { 414 cxusb_vprintk(dvbdev, BT656, "end of buffer, pos = %u\n", 415 bt656->pos); 416 return false; 417 } 418 419 return true; 420 } 421 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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