Hi K, Thank you for the patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] [also build test ERROR on v5.8-rc2 next-20200626] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/B-K-Karthik/fbtft-bus-c/20200627-125213 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 92cd1b5d65f5c67147c7da39a3c2ad7e6ff81027 config: i386-randconfig-a005-20200624 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): drivers/staging/fbtft/fbtft-bus.c:65:53: error: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8) ^ >> drivers/staging/fbtft/fbtft-bus.c:15:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'void' void func(struct fbtft_par *par, int len, ...) \ ^ >> drivers/staging/fbtft/fbtft-bus.c:66:1: note: in expansion of macro 'define_fbtft_write_reg' define_fbtft_write_reg(fbtft_write_reg16_bus8, __be16, u16, cpu_to_be16) ^~~~~~~~~~~~~~~~~~~~~~ drivers/staging/fbtft/fbtft-bus.c:67:57: error: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16) ^ drivers/staging/fbtft/fbtft-bus.c:69:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'void' void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...) ^~~~ vim +15 drivers/staging/fbtft/fbtft-bus.c c296d5f9957c03 Thomas Petazzoni 2014-12-31 7 c296d5f9957c03 Thomas Petazzoni 2014-12-31 8 /***************************************************************************** c296d5f9957c03 Thomas Petazzoni 2014-12-31 9 * c296d5f9957c03 Thomas Petazzoni 2014-12-31 10 * void (*write_reg)(struct fbtft_par *par, int len, ...); c296d5f9957c03 Thomas Petazzoni 2014-12-31 11 * c296d5f9957c03 Thomas Petazzoni 2014-12-31 12 *****************************************************************************/ c296d5f9957c03 Thomas Petazzoni 2014-12-31 13 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 14 #define define_fbtft_write_reg(func, buffer_type, data_type, modifier) \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 @15 void func(struct fbtft_par *par, int len, ...) \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 16 { \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 17 va_list args; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 18 int i, ret; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 19 int offset = 0; \ 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 20 buffer_type *buf = (buffer_type *)par->buf; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 21 \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 22 if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) { \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 23 va_start(args, len); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 24 for (i = 0; i < len; i++) { \ cc1c0eea8527bd Renato Soma 2018-04-17 25 buf[i] = modifier((data_type)va_arg(args, \ cc1c0eea8527bd Renato Soma 2018-04-17 26 unsigned int)); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 27 } \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 28 va_end(args); \ cc1c0eea8527bd Renato Soma 2018-04-17 29 fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, \ cc1c0eea8527bd Renato Soma 2018-04-17 30 par->info->device, buffer_type, buf, len, \ cc1c0eea8527bd Renato Soma 2018-04-17 31 "%s: ", __func__); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 32 } \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 33 \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 34 va_start(args, len); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 35 \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 36 if (par->startbyte) { \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 37 *(u8 *)par->buf = par->startbyte; \ 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 38 buf = (buffer_type *)(par->buf + 1); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 39 offset = 1; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 40 } \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 41 \ 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 42 *buf = modifier((data_type)va_arg(args, unsigned int)); \ cc1c0eea8527bd Renato Soma 2018-04-17 43 ret = fbtft_write_buf_dc(par, par->buf, sizeof(data_type) + offset, \ cc1c0eea8527bd Renato Soma 2018-04-17 44 0); \ e70065fdc11d86 Heiner Kallweit 2017-03-02 45 if (ret < 0) \ e70065fdc11d86 Heiner Kallweit 2017-03-02 46 goto out; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 47 len--; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 48 \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 49 if (par->startbyte) \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 50 *(u8 *)par->buf = par->startbyte | 0x2; \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 51 \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 52 if (len) { \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 53 i = len; \ e70065fdc11d86 Heiner Kallweit 2017-03-02 54 while (i--) \ cc1c0eea8527bd Renato Soma 2018-04-17 55 *buf++ = modifier((data_type)va_arg(args, \ cc1c0eea8527bd Renato Soma 2018-04-17 56 unsigned int)); \ e70065fdc11d86 Heiner Kallweit 2017-03-02 57 fbtft_write_buf_dc(par, par->buf, \ 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 58 len * (sizeof(data_type) + offset), 1); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 59 } \ e70065fdc11d86 Heiner Kallweit 2017-03-02 60 out: \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 61 va_end(args); \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 62 } \ c296d5f9957c03 Thomas Petazzoni 2014-12-31 63 EXPORT_SYMBOL(func); c296d5f9957c03 Thomas Petazzoni 2014-12-31 64 31b9aef1a7ba07 B K Karthik 2020-06-27 @65 define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, u8) 8d8825b420ffb3 Alfonso Lima Astor 2017-10-17 @66 define_fbtft_write_reg(fbtft_write_reg16_bus8, __be16, u16, cpu_to_be16) 31b9aef1a7ba07 B K Karthik 2020-06-27 67 define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16) c296d5f9957c03 Thomas Petazzoni 2014-12-31 68 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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