Hi Viorel, FYI, the error/warning still remains. tree: https://github.com/Freescale/linux-fslc pr/311 head: 81b028050d9762a6a884ec6d460ae109a4fc92de commit: b164260078426fece986dc4020b8a69d9a2f6023 [9162/17568] MLK-23567-2 ASoC: fsl_xcvr: enable SPDIF TX config: x86_64-randconfig-s021-20210416 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-280-g2cd6d34e-dirty # https://github.com/Freescale/linux-fslc/commit/b164260078426fece986dc4020... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc pr/311 git checkout b164260078426fece986dc4020b8a69d9a2f6023 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: sound/soc/fsl/fsl_xcvr.o: in function `fsl_xcvr_hw_params': vim +346 sound/soc/fsl/fsl_xcvr.c 330 331 static int fsl_xcvr_hw_params(struct snd_pcm_substream *substream, 332 struct snd_pcm_hw_params *params, 333 struct snd_soc_dai *dai) 334 { 335 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 336 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 337 u32 r = params_rate(params), ch = params_channels(params); 338 snd_pcm_format_t f = params_format(params); 339 u32 reg, val, bclk = 32 * r * ch; 340 u32 mode = xcvr->mode & FSL_XCVR_AMODE_MASK; 341 int i, ret; 342 343 if (!tx) 344 return 0; 345 347 xcvr->tx_iec958.status, ARRAY_SIZE(xcvr->tx_iec958.status)); 348 if (ret < 0) { 349 dev_err(dai->dev, "Creating IEC958 CS failed %d\n", ret); 350 return ret; 351 } 352 353 for (i = 0; i < 6; i++) { 354 val = (xcvr->tx_iec958.status[4 * i + 0] << 24) | 355 (xcvr->tx_iec958.status[4 * i + 1] << 16) | 356 (xcvr->tx_iec958.status[4 * i + 2] << 8) | 357 (xcvr->tx_iec958.status[4 * i + 3] << 0); 358 /* Update TX CS data bits */ 359 ret = regmap_write(xcvr->regmap, FSL_XCVR_TX_CS_DATA_0 + 4 * i, 360 val); 361 if (ret < 0) { 362 dev_err(dai->dev, "Failed to set TXCS%d: %d\n", i, ret); 363 return ret; 364 } 365 } 366 367 switch (mode) { 368 case FSL_XCVR_AMODE_EARC: 369 bclk *= 10; 370 break; 371 case FSL_XCVR_AMODE_SPDIF: 372 bclk *= 2; 373 break; 374 } 375 376 ret = fsl_xcvr_en_phy(xcvr, (mode == FSL_XCVR_AMODE_EARC), bclk); 377 if (ret < 0) { 378 dev_err(dai->dev, "Failed to set TX freq %u: %d\n", bclk, ret); 379 return ret; 380 } 381 382 /* enable/disable IEC958 encoding as function of input format */ 383 val = FSL_XCVR_TX_DPTH_CTRL_CS_MOD; 384 val |= FSL_XCVR_TX_DPTH_CTRL_EN_PREAMBLE; 385 val |= FSL_XCVR_TX_DPTH_CTRL_EN_PARITY; 386 387 if (f == SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE) 388 reg = FSL_XCVR_TX_DPTH_CTRL_CLR; /* disable IEC958 encoding */ 389 else 390 reg = FSL_XCVR_TX_DPTH_CTRL_SET; /* enable IEC958 encoding */ 391 392 ret = regmap_write(xcvr->regmap, reg, val); 393 if (ret < 0) { 394 dev_err(dai->dev, "Failed to en/dis IEC958 encode: %d\n", ret); 395 return ret; 396 } 397 398 return 0; 399 } 400 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org