[PATCH v3 3/4] thermal: qoriq: workaround unexpected temperature readings from tmu

[kernel test robot]

Hi Jacky,

kernel test robot noticed the following build errors:

[auto build test ERROR on b9ddaa95fd283bce7041550ddbbe7e764c477110]

url:    https://github.com/intel-lab-lkp/linux/commits/Jacky-Bai/dt-bindings-thermal-qoriq-Add-compatible-string-for-imx93/20250818-173822
base:   b9ddaa95fd283bce7041550ddbbe7e764c477110
patch link:    https://lore.kernel.org/r/20250818-imx93_tmu-v3-3-35f79a86c072%40nxp.com
patch subject: [PATCH v3 3/4] thermal: qoriq: workaround unexpected temperature readings from tmu
config: riscv-randconfig-001-20250819 (https://download.01.org/0day-ci/archive/20250819/202508191258.tYXB63eu-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 93d24b6b7b148c47a2fa228a4ef31524fa1d9f3f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250819/202508191258.tYXB63eu-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508191258.tYXB63eu-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     804 |         insb(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
     104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     812 |         insw(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
     105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     820 |         insl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
     106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     829 |         outsb(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
     118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     838 |         outsw(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
     119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     847 |         outsl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
     120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from drivers/thermal/qoriq_thermal.c:8:
   In file included from include/linux/io.h:12:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
         |                                                   ~~~~~~~~~~ ^
>> drivers/thermal/qoriq_thermal.c:281:9: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     281 |                              FIELD_PREP(TMRTRCTR_TEMP_MASK, 0x7));
         |                              ^
   7 warnings and 1 error generated.


vim +/FIELD_PREP +281 drivers/thermal/qoriq_thermal.c

   264	
   265	static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
   266	{
   267		/* Disable interrupt, using polling instead */
   268		regmap_write(data->regmap, REGS_TIER, TIER_DISABLE);
   269	
   270		/* Set update_interval */
   271		if (data->ver == TMU_VER1) {
   272			regmap_write(data->regmap, REGS_TMTMIR, TMTMIR_DEFAULT);
   273		} else {
   274			regmap_write(data->regmap, REGS_V2_TMTMIR, TMTMIR_DEFAULT);
   275			regmap_write(data->regmap, REGS_V2_TEUMR(0), GET_TEUMR0(data->drvdata));
   276		}
   277	
   278		/* ERR052243: Set the raising & falling edge monitor */
   279		if (CHECK_ERRATA_FLAG(data->drvdata, TMU_ERR052243)) {
   280			regmap_write(data->regmap, TMRTRCTR, TMRTRCTR_EN |
 > 281				     FIELD_PREP(TMRTRCTR_TEMP_MASK, 0x7));
   282			regmap_write(data->regmap, TMFTRCTR, TMFTRCTR_EN |
   283				     FIELD_PREP(TMFTRCTR_TEMP_MASK, 0x7));
   284	
   285		}
   286		/* Disable monitoring */
   287		regmap_write(data->regmap, REGS_TMR, TMR_DISABLE);
   288	}
   289	

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