Hi Kate, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20210816] [cannot apply to linus/master v5.14-rc6 v5.14-rc5 v5.14-rc4 v5.14-rc6] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Kate-Hsuan/Intel-platform-driver... base: b9011c7e671dbbf59bb753283ddfd03f0c9eb865 config: i386-randconfig-r023-20210816 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/30a4d97d4248adef672f46eeb0e32b816... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kate-Hsuan/Intel-platform-driver-code-movement/20210816-185713 git checkout 30a4d97d4248adef672f46eeb0e32b816b6f531c # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=i386 SHELL=/bin/bash drivers/platform/x86/intel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): vim +478 drivers/platform/x86/intel/scu/ipc.c 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 458 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 459 /** f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 460 * intel_scu_ipc_command_with_size() - Command with data f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 461 * @scu: Optional SCU IPC instance 8b236565600833 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-01-22 462 * @cmd: Command 8b236565600833 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-01-22 463 * @sub: Sub type 8b236565600833 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-01-22 464 * @in: Input data f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 465 * @inlen: Input length in bytes f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 466 * @size: Input size written to the IPC command register in whatever f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 467 * units (dword, byte) the particular firmware requires. Normally f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 468 * should be the same as @inlen. 8b236565600833 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-01-22 469 * @out: Output data f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 470 * @outlen: Output length in bytes 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 471 * 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 472 * Issue a command to the SCU which involves data transfers. Do the 8b236565600833 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-01-22 473 * data copies under the lock but leave it for the caller to interpret. 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 474 */ f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 475 int intel_scu_ipc_dev_command_with_size(struct intel_scu_ipc_dev *scu, int cmd, f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 476 int sub, const void *in, size_t inlen, f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 477 size_t size, void *out, size_t outlen) 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 @478 { f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 479 size_t outbuflen = DIV_ROUND_UP(outlen, sizeof(u32)); f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 480 size_t inbuflen = DIV_ROUND_UP(inlen, sizeof(u32)); f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 481 u32 cmdval, inbuf[4] = {}; ecb5646cb098d9 drivers/platform/x86/intel_scu_ipc.c Axel Lin 2011-01-25 482 int i, err; 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 483 f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 484 if (inbuflen > 4 || outbuflen > 4) f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 485 return -EINVAL; f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 486 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 487 mutex_lock(&ipclock); f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 488 if (!scu) f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 489 scu = ipcdev; f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 490 if (!scu) { 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 491 mutex_unlock(&ipclock); 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 492 return -ENODEV; 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 493 } 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 494 f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 495 memcpy(inbuf, in, inlen); f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 496 for (i = 0; i < inbuflen; i++) f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 497 ipc_data_writel(scu, inbuf[i], 4 * i); 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 498 f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 499 cmdval = (size << 16) | (sub << 12) | cmd; ea608f25fa09b5 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 500 ipc_command(scu, cmdval); b0b3f578a1c363 drivers/platform/x86/intel_scu_ipc.c Andy Shevchenko 2015-10-12 501 err = intel_scu_ipc_check_status(scu); 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 502 c7094d1d994c23 drivers/platform/x86/intel_scu_ipc.c Kuppuswamy Sathyanarayanan 2013-11-14 503 if (!err) { f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 504 u32 outbuf[4] = {}; f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 505 f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 506 for (i = 0; i < outbuflen; i++) f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 507 outbuf[i] = ipc_data_readl(scu, 4 * i); f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 508 f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 509 memcpy(out, outbuf, outlen); c7094d1d994c23 drivers/platform/x86/intel_scu_ipc.c Kuppuswamy Sathyanarayanan 2013-11-14 510 } 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 511 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 512 mutex_unlock(&ipclock); ea608f25fa09b5 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 513 if (err) ea608f25fa09b5 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 514 dev_err(&scu->dev, "IPC command %#x failed with %d\n", cmdval, err); 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 515 return err; 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 516 } f57fa18583f538 drivers/platform/x86/intel_scu_ipc.c Mika Westerberg 2020-04-16 517 EXPORT_SYMBOL(intel_scu_ipc_dev_command_with_size); 9a58a3333923c7 drivers/platform/x86/intel_scu_ipc.c Sreedhara DS 2010-04-26 518 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org