On 10/3/24 12:35 AM, kernel test robot wrote: > Hi David, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on 431c39f6d3edbab14f48dbf37a58ccdc0ac3be1e] > > url: https://github.com/intel-lab-lkp/linux/commits/David-Lechner/cleanup-add-conditional-guard-helper/20241002-063209 > base: 431c39f6d3edbab14f48dbf37a58ccdc0ac3be1e > patch link: https://lore.kernel.org/r/20241001-cleanup-if_not_cond_guard-v1-2-7753810b0f7a%40baylibre.com > patch subject: [PATCH 2/3] iio: adc: ad7380: use if_not_cond_guard for claim direct > config: arm64-randconfig-001-20241003 (https://download.01.org/0day-ci/archive/20241003/202410031253.vjAMDYuX-lkp@xxxxxxxxx/config) > compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241003/202410031253.vjAMDYuX-lkp@xxxxxxxxx/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@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202410031253.vjAMDYuX-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > >>> drivers/iio/adc/ad7380.c:823:3: error: expected expression > 823 | if_not_cond_guard(iio_claim_direct_try, indio_dev) > | ^ > include/linux/cleanup.h:316:2: note: expanded from macro 'if_not_cond_guard' > 316 | __if_not_cond_guard(_name, __UNIQUE_ID(guard), args) > | ^ > include/linux/cleanup.h:312:2: note: expanded from macro '__if_not_cond_guard' > 312 | CLASS(_name, _id)(args); \ > | ^ > include/linux/cleanup.h:258:2: note: expanded from macro 'CLASS' > 258 | class_##_name##_t var __cleanup(class_##_name##_destructor) = \ > | ^ > <scratch space>:81:1: note: expanded from here > 81 | class_iio_claim_direct_try_t > | ^ > drivers/iio/adc/ad7380.c:823:3: error: use of undeclared identifier '__UNIQUE_ID_guard799' > include/linux/cleanup.h:316:29: note: expanded from macro 'if_not_cond_guard' > 316 | __if_not_cond_guard(_name, __UNIQUE_ID(guard), args) > | ^ > include/linux/compiler.h:189:29: note: expanded from macro '__UNIQUE_ID' > 189 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) > | ^ > include/linux/compiler_types.h:84:22: note: expanded from macro '__PASTE' > 84 | #define __PASTE(a,b) ___PASTE(a,b) > | ^ > include/linux/compiler_types.h:83:23: note: expanded from macro '___PASTE' > 83 | #define ___PASTE(a,b) a##b > | ^ > <scratch space>:79:1: note: expanded from here > 79 | __UNIQUE_ID_guard799 > | ^ >>> drivers/iio/adc/ad7380.c:935:2: error: cannot jump from switch statement to this case label > 935 | default: > | ^ > drivers/iio/adc/ad7380.c:911:3: note: jump bypasses initialization of variable with __attribute__((cleanup)) > 911 | if_not_cond_guard(iio_claim_direct_try, indio_dev) > | ^ > include/linux/cleanup.h:316:29: note: expanded from macro 'if_not_cond_guard' > 316 | __if_not_cond_guard(_name, __UNIQUE_ID(guard), args) > | ^ > include/linux/compiler.h:189:29: note: expanded from macro '__UNIQUE_ID' > 189 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) > | ^ > include/linux/compiler_types.h:84:22: note: expanded from macro '__PASTE' > 84 | #define __PASTE(a,b) ___PASTE(a,b) > | ^ > include/linux/compiler_types.h:83:23: note: expanded from macro '___PASTE' > 83 | #define ___PASTE(a,b) a##b > | ^ > <scratch space>:90:1: note: expanded from here > 90 | __UNIQUE_ID_guard800 > | ^ > 3 errors generated. > > Kconfig warnings: (for reference only) > WARNING: unmet direct dependencies detected for MODVERSIONS > Depends on [n]: MODULES [=y] && !COMPILE_TEST [=y] > Selected by [y]: > - RANDSTRUCT_FULL [=y] && (CC_HAS_RANDSTRUCT [=y] || GCC_PLUGINS [=n]) && MODULES [=y] > > > vim +823 drivers/iio/adc/ad7380.c > > 808 > 809 static int ad7380_read_raw(struct iio_dev *indio_dev, > 810 struct iio_chan_spec const *chan, > 811 int *val, int *val2, long info) > 812 { > 813 struct ad7380_state *st = iio_priv(indio_dev); > 814 const struct iio_scan_type *scan_type; > 815 > 816 scan_type = iio_get_current_scan_type(indio_dev, chan); > 817 > 818 if (IS_ERR(scan_type)) > 819 return PTR_ERR(scan_type); > 820 > 821 switch (info) { > 822 case IIO_CHAN_INFO_RAW: > > 823 if_not_cond_guard(iio_claim_direct_try, indio_dev) > 824 return -EBUSY; > 825 > 826 return ad7380_read_direct(st, chan->scan_index, scan_type, val); > 827 case IIO_CHAN_INFO_SCALE: > 828 /* > 829 * According to the datasheet, the LSB size is: > 830 * * (2 × VREF) / 2^N, for differential chips > 831 * * VREF / 2^N, for pseudo-differential chips > 832 * where N is the ADC resolution (i.e realbits) > 833 */ > 834 *val = st->vref_mv; > 835 *val2 = scan_type->realbits - chan->differential; > 836 > 837 return IIO_VAL_FRACTIONAL_LOG2; > 838 case IIO_CHAN_INFO_OFFSET: > 839 /* > 840 * According to IIO ABI, offset is applied before scale, > 841 * so offset is: vcm_mv / scale > 842 */ > 843 *val = st->vcm_mv[chan->channel] * (1 << scan_type->realbits) > 844 / st->vref_mv; > 845 > 846 return IIO_VAL_INT; > 847 case IIO_CHAN_INFO_OVERSAMPLING_RATIO: > 848 *val = st->oversampling_ratio; > 849 > 850 return IIO_VAL_INT; > 851 default: > 852 return -EINVAL; > 853 } > 854 } > 855 > 856 static int ad7380_read_avail(struct iio_dev *indio_dev, > 857 struct iio_chan_spec const *chan, > 858 const int **vals, int *type, int *length, > 859 long mask) > 860 { > 861 switch (mask) { > 862 case IIO_CHAN_INFO_OVERSAMPLING_RATIO: > 863 *vals = ad7380_oversampling_ratios; > 864 *length = ARRAY_SIZE(ad7380_oversampling_ratios); > 865 *type = IIO_VAL_INT; > 866 > 867 return IIO_AVAIL_LIST; > 868 default: > 869 return -EINVAL; > 870 } > 871 } > 872 > 873 /** > 874 * ad7380_osr_to_regval - convert ratio to OSR register value > 875 * @ratio: ratio to check > 876 * > 877 * Check if ratio is present in the list of available ratios and return the > 878 * corresponding value that needs to be written to the register to select that > 879 * ratio. > 880 * > 881 * Returns: register value (0 to 7) or -EINVAL if there is not an exact match > 882 */ > 883 static int ad7380_osr_to_regval(int ratio) > 884 { > 885 int i; > 886 > 887 for (i = 0; i < ARRAY_SIZE(ad7380_oversampling_ratios); i++) { > 888 if (ratio == ad7380_oversampling_ratios[i]) > 889 return i; > 890 } > 891 > 892 return -EINVAL; > 893 } > 894 > 895 static int ad7380_write_raw(struct iio_dev *indio_dev, > 896 struct iio_chan_spec const *chan, int val, > 897 int val2, long mask) > 898 { > 899 struct ad7380_state *st = iio_priv(indio_dev); > 900 int ret, osr, boost; > 901 > 902 switch (mask) { > 903 case IIO_CHAN_INFO_OVERSAMPLING_RATIO: > 904 osr = ad7380_osr_to_regval(val); > 905 if (osr < 0) > 906 return osr; > 907 > 908 /* always enable resolution boost when oversampling is enabled */ > 909 boost = osr > 0 ? 1 : 0; > 910 > 911 if_not_cond_guard(iio_claim_direct_try, indio_dev) > 912 return -EBUSY; > 913 > 914 ret = regmap_update_bits(st->regmap, > 915 AD7380_REG_ADDR_CONFIG1, > 916 AD7380_CONFIG1_OSR | AD7380_CONFIG1_RES, > 917 FIELD_PREP(AD7380_CONFIG1_OSR, osr) | > 918 FIELD_PREP(AD7380_CONFIG1_RES, boost)); > 919 > 920 if (ret) > 921 return ret; > 922 > 923 st->oversampling_ratio = val; > 924 st->resolution_boost_enabled = boost; > 925 > 926 /* > 927 * Perform a soft reset. This will flush the oversampling block > 928 * and FIFO but will maintain the content of the configurable > 929 * registers. > 930 */ > 931 return regmap_update_bits(st->regmap, AD7380_REG_ADDR_CONFIG2, > 932 AD7380_CONFIG2_RESET, > 933 FIELD_PREP(AD7380_CONFIG2_RESET, > 934 AD7380_CONFIG2_RESET_SOFT)); > > 935 default: > 936 return -EINVAL; > 937 } > 938 } > 939 > This warning and the "warning: label followed by a declaration is a C23 extension" from the other bot message are both fixed with the following modification: diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index 19a942035e93..34adc5aeb6f3 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -819,11 +819,12 @@ static int ad7380_read_raw(struct iio_dev *indio_dev, return PTR_ERR(scan_type); switch (info) { - case IIO_CHAN_INFO_RAW: + case IIO_CHAN_INFO_RAW: { if_not_cond_guard(iio_claim_direct_try, indio_dev) return -EBUSY; return ad7380_read_direct(st, chan->scan_index, scan_type, val); + } case IIO_CHAN_INFO_SCALE: /* * According to the datasheet, the LSB size is: @@ -900,7 +901,7 @@ static int ad7380_write_raw(struct iio_dev *indio_dev, int ret, osr, boost; switch (mask) { - case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: { osr = ad7380_osr_to_regval(val); if (osr < 0) return osr; @@ -932,6 +933,7 @@ static int ad7380_write_raw(struct iio_dev *indio_dev, AD7380_CONFIG2_RESET, FIELD_PREP(AD7380_CONFIG2_RESET, AD7380_CONFIG2_RESET_SOFT)); + } default: return -EINVAL; }
