Hi Mayank, Thank you for the patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] url: https://github.com/0day-ci/linux/commits/Mayank-Suman/staging-fbtft-replaced-udelay-with-usleep_range/20210205-171807 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 06b0c0dce88e2aa2f01343db0f26d214d7f264a0 config: arm64-randconfig-r025-20210205 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/0day-ci/linux/commit/4a777af1cc91dc603b6b92fe06fd94081dc2891e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mayank-Suman/staging-fbtft-replaced-udelay-with-usleep_range/20210205-171807 git checkout 4a777af1cc91dc603b6b92fe06fd94081dc2891e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/staging/fbtft/fb_ra8875.c:220:18: error: too few arguments to function call, expected 2, have 1 usleep_range(100); ~~~~~~~~~~~~ ^ include/linux/delay.h:61:6: note: 'usleep_range' declared here void usleep_range(unsigned long min, unsigned long max); ^ drivers/staging/fbtft/fb_ra8875.c:241:18: error: too few arguments to function call, expected 2, have 1 usleep_range(100); ~~~~~~~~~~~~ ^ include/linux/delay.h:61:6: note: 'usleep_range' declared here void usleep_range(unsigned long min, unsigned long max); ^ 2 errors generated. -- >> drivers/staging/fbtft/fb_tinylcd.c:44:18: error: too few arguments to function call, expected 2, have 1 usleep_range(250); ~~~~~~~~~~~~ ^ include/linux/delay.h:61:6: note: 'usleep_range' declared here void usleep_range(unsigned long min, unsigned long max); ^ 1 error generated. -- >> drivers/staging/fbtft/fb_watterott.c:87:19: error: too few arguments to function call, expected 2, have 1 usleep_range(300); ~~~~~~~~~~~~ ^ include/linux/delay.h:61:6: note: 'usleep_range' declared here void usleep_range(unsigned long min, unsigned long max); ^ drivers/staging/fbtft/fb_watterott.c:127:19: error: too few arguments to function call, expected 2, have 1 usleep_range(700); ~~~~~~~~~~~~ ^ include/linux/delay.h:61:6: note: 'usleep_range' declared here void usleep_range(unsigned long min, unsigned long max); ^ 2 errors generated. vim +220 drivers/staging/fbtft/fb_ra8875.c 189 190 static void write_reg8_bus8(struct fbtft_par *par, int len, ...) 191 { 192 va_list args; 193 int i, ret; 194 u8 *buf = par->buf; 195 196 /* slow down spi-speed for writing registers */ 197 par->fbtftops.write = write_spi; 198 199 if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) { 200 va_start(args, len); 201 for (i = 0; i < len; i++) 202 buf[i] = (u8)va_arg(args, unsigned int); 203 va_end(args); 204 fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, 205 u8, buf, len, "%s: ", __func__); 206 } 207 208 va_start(args, len); 209 *buf++ = 0x80; 210 *buf = (u8)va_arg(args, unsigned int); 211 ret = par->fbtftops.write(par, par->buf, 2); 212 if (ret < 0) { 213 va_end(args); 214 dev_err(par->info->device, "write() failed and returned %dn", 215 ret); 216 return; 217 } 218 len--; 219 > 220 usleep_range(100); 221 222 if (len) { 223 buf = (u8 *)par->buf; 224 *buf++ = 0x00; 225 i = len; 226 while (i--) 227 *buf++ = (u8)va_arg(args, unsigned int); 228 229 ret = par->fbtftops.write(par, par->buf, len + 1); 230 if (ret < 0) { 231 va_end(args); 232 dev_err(par->info->device, 233 "write() failed and returned %dn", ret); 234 return; 235 } 236 } 237 va_end(args); 238 239 /* restore user spi-speed */ 240 par->fbtftops.write = fbtft_write_spi; 241 usleep_range(100); 242 } 243 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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