[kbuild-all] sound/core/control_led.c:492:22: sparse: sparse: incorrect type in assignment (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a90af8f15bdc9449ee2d24e1d73fa3f7e8633f81 commit: a135dfb5de1501327895729b4f513370d2555b4d ALSA: led control - add sysfs kcontrol LED marking layer date: 8 months ago config: sparc64-randconfig-s031-20211116 (attached as .config) compiler: sparc64-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout a135dfb5de1501327895729b4f513370d2555b4d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sparc64 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 >>) sound/core/control_led.c:492:22: sparse: expected unsigned int sound/core/control_led.c:492:22: sparse: got restricted snd_ctl_elem_iface_t [usertype] sound/core/control_led.c:494:22: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int @@ got restricted snd_ctl_elem_iface_t [usertype] @@ sound/core/control_led.c:494:22: sparse: expected unsigned int sound/core/control_led.c:494:22: sparse: got restricted snd_ctl_elem_iface_t [usertype] sound/core/control_led.c:523:49: sparse: expected unsigned int *val sound/core/control_led.c:523:49: sparse: got restricted snd_ctl_elem_iface_t * vim +492 sound/core/control_led.c 488 489 static char *parse_iface(char *s, unsigned int *val) 490 { 491 if (!strncasecmp(s, "card", 4)) 493 else if (!strncasecmp(s, "mixer", 5)) 494 *val = SNDRV_CTL_ELEM_IFACE_MIXER; 495 return find_eos(s); 496 } 497 498 /* 499 * These types of input strings are accepted: 500 * 501 * unsigned integer - numid (equivaled to numid=UINT) 502 * string - basic mixer name (equivalent to iface=MIXER,name=STR) 503 * numid=UINT 504 * [iface=MIXER,][device=UINT,][subdevice=UINT,]name=STR[,index=UINT] 505 */ 506 static ssize_t set_led_id(struct snd_ctl_led_card *led_card, const char *buf, size_t count, 507 bool attach) 508 { 509 char buf2[256], *s; 510 size_t len = max(sizeof(s) - 1, count); 511 struct snd_ctl_elem_id id; 512 int err; 513 514 strncpy(buf2, buf, len); 515 buf2[len] = '\0'; 516 memset(&id, 0, sizeof(id)); 517 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 518 s = buf2; 519 while (*s) { 520 if (!strncasecmp(s, "numid=", 6)) { 521 s = parse_uint(s + 6, &id.numid); 522 } else if (!strncasecmp(s, "iface=", 6)) { 524 } else if (!strncasecmp(s, "device=", 7)) { 525 s = parse_uint(s + 7, &id.device); 526 } else if (!strncasecmp(s, "subdevice=", 10)) { 527 s = parse_uint(s + 10, &id.subdevice); 528 } else if (!strncasecmp(s, "name=", 5)) { 529 s = parse_string(s + 5, id.name, sizeof(id.name)); 530 } else if (!strncasecmp(s, "index=", 6)) { 531 s = parse_uint(s + 6, &id.index); 532 } else if (s == buf2) { 533 while (*s) { 534 if (*s < '0' || *s > '9') 535 break; 536 s++; 537 } 538 if (*s == '\0') 539 parse_uint(buf2, &id.numid); 540 else { 541 for (; *s >= ' '; s++); 542 *s = '\0'; 543 strlcpy(id.name, buf2, sizeof(id.name)); 544 } 545 break; 546 } 547 if (*s == ',') 548 s++; 549 } 550 551 err = snd_ctl_led_set_id(led_card->number, &id, led_card->led->group, attach); 552 if (err < 0) 553 return err; 554 555 return count; 556 } 557 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org