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SubjectRe: [PATCH] staging: fbtft replaced udelay with usleep_range
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@intel.com>

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@lists.01.org
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