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    Subject[watchdog-next:v5.18-rc1 12/13] drivers/watchdog/sp5100_tco.c:345:8: error: implicit declaration of function 'request_mem_region_muxed'
    tree:   git://www.linux-watchdog.org/linux-watchdog-next.git v5.18-rc1
    head: 826270373f17fd8ebd10753ca0a5fd2ceb1dc38e
    commit: 0578fff4aae5bce3f09875f58e68e9ffbab8daf5 [12/13] Watchdog: sp5100_tco: Add initialization using EFCH MMIO
    config: i386-randconfig-a014-20220328 (https://download.01.org/0day-ci/archive/20220328/202203280401.mKXClwW5-lkp@intel.com/config)
    compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d)
    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
    git remote add watchdog-next git://www.linux-watchdog.org/linux-watchdog-next.git
    git fetch --no-tags watchdog-next v5.18-rc1
    git checkout 0578fff4aae5bce3f09875f58e68e9ffbab8daf5
    # save the config file to linux build tree
    mkdir build_dir
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/watchdog/

    If you fix the issue, kindly add following tag as appropriate
    Reported-by: kernel test robot <lkp@intel.com>

    All error/warnings (new ones prefixed by >>):

    >> drivers/watchdog/sp5100_tco.c:345:8: error: implicit declaration of function 'request_mem_region_muxed' [-Werror,-Wimplicit-function-declaration]
    res = request_mem_region_muxed(EFCH_PM_ACPI_MMIO_PM_ADDR,
    ^
    >> drivers/watchdog/sp5100_tco.c:345:6: warning: incompatible integer to pointer conversion assigning to 'struct resource *' from 'int' [-Wint-conversion]
    res = request_mem_region_muxed(EFCH_PM_ACPI_MMIO_PM_ADDR,
    ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    1 warning and 1 error generated.


    vim +/request_mem_region_muxed +345 drivers/watchdog/sp5100_tco.c

    333
    334 static int sp5100_tco_setupdevice_mmio(struct device *dev,
    335 struct watchdog_device *wdd)
    336 {
    337 struct sp5100_tco *tco = watchdog_get_drvdata(wdd);
    338 const char *dev_name = SB800_DEVNAME;
    339 u32 mmio_addr = 0, alt_mmio_addr = 0;
    340 struct resource *res;
    341 void __iomem *addr;
    342 int ret;
    343 u32 val;
    344
    > 345 res = request_mem_region_muxed(EFCH_PM_ACPI_MMIO_PM_ADDR,
    346 EFCH_PM_ACPI_MMIO_PM_SIZE,
    347 "sp5100_tco");
    348
    349 if (!res) {
    350 dev_err(dev,
    351 "Memory region 0x%08x already in use\n",
    352 EFCH_PM_ACPI_MMIO_PM_ADDR);
    353 return -EBUSY;
    354 }
    355
    356 addr = ioremap(EFCH_PM_ACPI_MMIO_PM_ADDR, EFCH_PM_ACPI_MMIO_PM_SIZE);
    357 if (!addr) {
    358 dev_err(dev, "Address mapping failed\n");
    359 ret = -ENOMEM;
    360 goto out;
    361 }
    362
    363 /*
    364 * EFCH_PM_DECODEEN_WDT_TMREN is dual purpose. This bitfield
    365 * enables sp5100_tco register MMIO space decoding. The bitfield
    366 * also starts the timer operation. Enable if not already enabled.
    367 */
    368 val = efch_read_pm_reg8(addr, EFCH_PM_DECODEEN);
    369 if (!(val & EFCH_PM_DECODEEN_WDT_TMREN)) {
    370 efch_update_pm_reg8(addr, EFCH_PM_DECODEEN, 0xff,
    371 EFCH_PM_DECODEEN_WDT_TMREN);
    372 }
    373
    374 /* Error if the timer could not be enabled */
    375 val = efch_read_pm_reg8(addr, EFCH_PM_DECODEEN);
    376 if (!(val & EFCH_PM_DECODEEN_WDT_TMREN)) {
    377 dev_err(dev, "Failed to enable the timer\n");
    378 ret = -EFAULT;
    379 goto out;
    380 }
    381
    382 mmio_addr = EFCH_PM_WDT_ADDR;
    383
    384 /* Determine alternate MMIO base address */
    385 val = efch_read_pm_reg8(addr, EFCH_PM_ISACONTROL);
    386 if (val & EFCH_PM_ISACONTROL_MMIOEN)
    387 alt_mmio_addr = EFCH_PM_ACPI_MMIO_ADDR +
    388 EFCH_PM_ACPI_MMIO_WDT_OFFSET;
    389
    390 ret = sp5100_tco_prepare_base(tco, mmio_addr, alt_mmio_addr, dev_name);
    391 if (!ret) {
    392 tco_timer_enable_mmio(addr);
    393 ret = sp5100_tco_timer_init(tco);
    394 }
    395
    396 out:
    397 if (addr)
    398 iounmap(addr);
    399
    400 release_resource(res);
    401
    402 return ret;
    403 }
    404

    --
    0-DAY CI Kernel Test Service
    https://01.org/lkp

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