Hi Alex, Thank you for the patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] [also build test ERROR on v4.15-rc1 next-20171127] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Alex-Frappier-Lachapelle/Staging-comedi-das16-Fixed-a-const-struct-coding-style-issue/20171128-090836 config: x86_64-randconfig-x004-201748 (attached as .config) compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): drivers/staging//comedi/drivers/das16.c: In function 'das16_ai_range': >> drivers/staging//comedi/drivers/das16.c:980:18: error: assignment of member 'length' in read-only object lrange->length = 1; ^ >> drivers/staging//comedi/drivers/das16.c:981:10: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] krange = lrange->range; ^ drivers/staging//comedi/drivers/das16.c: In function 'das16_ao_range': drivers/staging//comedi/drivers/das16.c:1014:18: error: assignment of member 'length' in read-only object lrange->length = 1; ^ drivers/staging//comedi/drivers/das16.c:1015:10: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] krange = lrange->range; ^ vim +/length +980 drivers/staging//comedi/drivers/das16.c 742c4a09 H Hartley Sweeten 2015-01-12 958 0ce8280e H Hartley Sweeten 2015-01-26 959 static const struct comedi_lrange *das16_ai_range(struct comedi_device *dev, 0ce8280e H Hartley Sweeten 2015-01-26 960 struct comedi_subdevice *s, 0ce8280e H Hartley Sweeten 2015-01-26 961 struct comedi_devconfig *it, 0ce8280e H Hartley Sweeten 2015-01-26 962 unsigned int pg_type, 0ce8280e H Hartley Sweeten 2015-01-26 963 unsigned int status) 0ce8280e H Hartley Sweeten 2015-01-26 964 { 0ce8280e H Hartley Sweeten 2015-01-26 965 unsigned int min = it->options[4]; 0ce8280e H Hartley Sweeten 2015-01-26 966 unsigned int max = it->options[5]; 0ce8280e H Hartley Sweeten 2015-01-26 967 0ce8280e H Hartley Sweeten 2015-01-26 968 /* get any user-defined input range */ 0ce8280e H Hartley Sweeten 2015-01-26 969 if (pg_type == das16_pg_none && (min || max)) { 680d002a Alex Frappier Lachapelle 2017-11-25 970 const struct comedi_lrange *lrange; 0ce8280e H Hartley Sweeten 2015-01-26 971 struct comedi_krange *krange; 0ce8280e H Hartley Sweeten 2015-01-26 972 0ce8280e H Hartley Sweeten 2015-01-26 973 /* allocate single-range range table */ 0ce8280e H Hartley Sweeten 2015-01-26 974 lrange = comedi_alloc_spriv(s, 0ce8280e H Hartley Sweeten 2015-01-26 975 sizeof(*lrange) + sizeof(*krange)); 0ce8280e H Hartley Sweeten 2015-01-26 976 if (!lrange) 0ce8280e H Hartley Sweeten 2015-01-26 977 return &range_unknown; 0ce8280e H Hartley Sweeten 2015-01-26 978 0ce8280e H Hartley Sweeten 2015-01-26 979 /* initialize ai range */ 0ce8280e H Hartley Sweeten 2015-01-26 @980 lrange->length = 1; 0ce8280e H Hartley Sweeten 2015-01-26 @981 krange = lrange->range; 0ce8280e H Hartley Sweeten 2015-01-26 982 krange->min = min; 0ce8280e H Hartley Sweeten 2015-01-26 983 krange->max = max; 0ce8280e H Hartley Sweeten 2015-01-26 984 krange->flags = UNIT_volt; 0ce8280e H Hartley Sweeten 2015-01-26 985 0ce8280e H Hartley Sweeten 2015-01-26 986 return lrange; 0ce8280e H Hartley Sweeten 2015-01-26 987 } 0ce8280e H Hartley Sweeten 2015-01-26 988 0ce8280e H Hartley Sweeten 2015-01-26 989 /* use software programmable range */ 0ce8280e H Hartley Sweeten 2015-01-26 990 if (status & DAS16_STATUS_UNIPOLAR) 0ce8280e H Hartley Sweeten 2015-01-26 991 return das16_ai_uni_lranges[pg_type]; 0ce8280e H Hartley Sweeten 2015-01-26 992 return das16_ai_bip_lranges[pg_type]; 0ce8280e H Hartley Sweeten 2015-01-26 993 } 0ce8280e H Hartley Sweeten 2015-01-26 994 :::::: The code at line 980 was first introduced by commit :::::: 0ce8280e2876091b5c67cb515fae8e9bf3b50bfd staging: comedi: das16: introduce das16_ai_range() :::::: TO: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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