Hi K,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing] [also build test WARNING 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-Removing-th... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 92cd1b5d65f5c67147c7da39a3c2ad7e6ff81027 config: ia64-randconfig-s031-20200624 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=ia64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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

sparse warnings: (new ones prefixed by >>)

...

drivers/staging/fbtft/fbtft-bus.c:65:1: sparse: sparse: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given

drivers/staging/fbtft/fbtft-bus.c:67:1: sparse: sparse: macro "define_fbtft_write_reg" requires 4 arguments, but only 3 given drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got void drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got (

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'if' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got =

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'for' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got < drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got ++ drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got }

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'do' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got { drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got ->

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'if' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got <

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'if' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got -- drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got ->

...

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'if' as identifier drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Trying to use reserved word 'if' as identifier

drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got : drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:66:1: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:69:1: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:69:1: sparse: sparse: got void drivers/staging/fbtft/fbtft-bus.c:76:13: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:76:13: sparse: sparse: got ( drivers/staging/fbtft/fbtft-bus.c:76:9: sparse: sparse: Trying to use reserved word 'if' as identifier drivers/staging/fbtft/fbtft-bus.c:78:24: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:78:24: sparse: sparse: got = drivers/staging/fbtft/fbtft-bus.c:78:17: sparse: sparse: Trying to use reserved word 'for' as identifier drivers/staging/fbtft/fbtft-bus.c:78:31: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:78:31: sparse: sparse: got < drivers/staging/fbtft/fbtft-bus.c:78:39: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:78:39: sparse: sparse: got ++ drivers/staging/fbtft/fbtft-bus.c:79:50: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:79:50: sparse: sparse: got += drivers/staging/fbtft/fbtft-bus.c:79:50: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:79:50: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:81:17: sparse: sparse: Trying to use reserved word 'do' as identifier drivers/staging/fbtft/fbtft-bus.c:81:17: sparse: sparse: Expected ; at end of declaration drivers/staging/fbtft/fbtft-bus.c:81:17: sparse: sparse: got { drivers/staging/fbtft/fbtft-bus.c:81:17: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:81:17: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:84:9: sparse: sparse: Expected ; at the end of type declaration drivers/staging/fbtft/fbtft-bus.c:84:9: sparse: sparse: got } drivers/staging/fbtft/fbtft-bus.c:88:16: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:88:16: sparse: sparse: got -> drivers/staging/fbtft/fbtft-bus.c:88:9: sparse: sparse: Trying to use reserved word 'if' as identifier drivers/staging/fbtft/fbtft-bus.c:93:24: sparse: sparse: Expected ) in function declarator drivers/staging/fbtft/fbtft-bus.c:93:24: sparse: sparse: got =

...

drivers/staging/fbtft/fbtft-bus.c:93:17: sparse: sparse: too many errors

# https://github.com/0day-ci/linux/commit/f9a954fc5ae43b8fb5195dbb7152976581d8... git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout f9a954fc5ae43b8fb5195dbb7152976581d80a1a vim +/define_fbtft_write_reg +65 drivers/staging/fbtft/fbtft-bus.c

c296d5f9957c03 Thomas Petazzoni 2014-12-31 64 f9a954fc5ae43b 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) f9a954fc5ae43b B K Karthik 2020-06-27 67 define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, u16) c296d5f9957c03 Thomas Petazzoni 2014-12-31 68 c296d5f9957c03 Thomas Petazzoni 2014-12-31 69 void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...) c296d5f9957c03 Thomas Petazzoni 2014-12-31 70 { c296d5f9957c03 Thomas Petazzoni 2014-12-31 71 va_list args; c296d5f9957c03 Thomas Petazzoni 2014-12-31 72 int i, ret; c296d5f9957c03 Thomas Petazzoni 2014-12-31 73 int pad = 0; c296d5f9957c03 Thomas Petazzoni 2014-12-31 74 u16 *buf = (u16 *)par->buf; c296d5f9957c03 Thomas Petazzoni 2014-12-31 75 c296d5f9957c03 Thomas Petazzoni 2014-12-31 76 if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) { c296d5f9957c03 Thomas Petazzoni 2014-12-31 77 va_start(args, len); c296d5f9957c03 Thomas Petazzoni 2014-12-31 78 for (i = 0; i < len; i++) c296d5f9957c03 Thomas Petazzoni 2014-12-31 79 *(((u8 *)buf) + i) = (u8)va_arg(args, unsigned int); c296d5f9957c03 Thomas Petazzoni 2014-12-31 80 va_end(args); c296d5f9957c03 Thomas Petazzoni 2014-12-31 @81 fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, 333c7b940526be Leonardo Brás 2018-08-07 82 par->info->device, u8, buf, len, "%s: ", 333c7b940526be Leonardo Brás 2018-08-07 83 __func__); c296d5f9957c03 Thomas Petazzoni 2014-12-31 84 } c296d5f9957c03 Thomas Petazzoni 2014-12-31 85 if (len <= 0) c296d5f9957c03 Thomas Petazzoni 2014-12-31 86 return; c296d5f9957c03 Thomas Petazzoni 2014-12-31 87 c296d5f9957c03 Thomas Petazzoni 2014-12-31 88 if (par->spi && (par->spi->bits_per_word == 8)) { c296d5f9957c03 Thomas Petazzoni 2014-12-31 89 /* we're emulating 9-bit, pad start of buffer with no-ops b2ac4a927034d0 Anson Jacob 2016-08-25 90 * (assuming here that zero is a no-op) b2ac4a927034d0 Anson Jacob 2016-08-25 91 */ c296d5f9957c03 Thomas Petazzoni 2014-12-31 92 pad = (len % 4) ? 4 - (len % 4) : 0; c296d5f9957c03 Thomas Petazzoni 2014-12-31 @93 for (i = 0; i < pad; i++) c296d5f9957c03 Thomas Petazzoni 2014-12-31 94 *buf++ = 0x000; c296d5f9957c03 Thomas Petazzoni 2014-12-31 95 } c296d5f9957c03 Thomas Petazzoni 2014-12-31 96 c296d5f9957c03 Thomas Petazzoni 2014-12-31 97 va_start(args, len); c296d5f9957c03 Thomas Petazzoni 2014-12-31 98 *buf++ = (u8)va_arg(args, unsigned int); c296d5f9957c03 Thomas Petazzoni 2014-12-31 99 i = len - 1; c296d5f9957c03 Thomas Petazzoni 2014-12-31 100 while (i--) { c296d5f9957c03 Thomas Petazzoni 2014-12-31 101 *buf = (u8)va_arg(args, unsigned int); c296d5f9957c03 Thomas Petazzoni 2014-12-31 102 *buf++ |= 0x100; /* dc=1 */ c296d5f9957c03 Thomas Petazzoni 2014-12-31 103 } c296d5f9957c03 Thomas Petazzoni 2014-12-31 104 va_end(args); c296d5f9957c03 Thomas Petazzoni 2014-12-31 105 ret = par->fbtftops.write(par, par->buf, (len + pad) * sizeof(u16)); c296d5f9957c03 Thomas Petazzoni 2014-12-31 106 if (ret < 0) { c296d5f9957c03 Thomas Petazzoni 2014-12-31 107 dev_err(par->info->device, aed1c72e447f0a Haneen Mohammed 2015-03-06 108 "write() failed and returned %d\n", ret); c296d5f9957c03 Thomas Petazzoni 2014-12-31 109 return; c296d5f9957c03 Thomas Petazzoni 2014-12-31 110 } c296d5f9957c03 Thomas Petazzoni 2014-12-31 111 } c296d5f9957c03 Thomas Petazzoni 2014-12-31 112 EXPORT_SYMBOL(fbtft_write_reg8_bus9); c296d5f9957c03 Thomas Petazzoni 2014-12-31 113

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