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Subject[ogabbay:next 11/13] drivers/misc/habanalabs/common/state_dump.c:12: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git next
head: e07c3e2148e472868aa22cffb5e4b0b2c7b73be8
commit: 41a0f1e2bd12cb274dec431c9904612c61bdf21f [11/13] habanalabs: expose state dump
config: x86_64-randconfig-a006-20210704 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 89c1c64cc3170a05a881bb9954feafc3edca6704)
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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/?id=41a0f1e2bd12cb274dec431c9904612c61bdf21f
git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
git fetch --no-tags ogabbay next
git checkout 41a0f1e2bd12cb274dec431c9904612c61bdf21f
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

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

All warnings (new ones prefixed by >>):

>> drivers/misc/habanalabs/common/state_dump.c:12: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* A helper function, format an integer as binary using supplied scratch buffer,


vim +12 drivers/misc/habanalabs/common/state_dump.c

10
11 /**
> 12 * A helper function, format an integer as binary using supplied scratch buffer,
13 * return the pointer to the buffer.
14 * @buf: the buffer to use
15 * @buf_len: buffer capacity
16 * @n: number to format
17 *
18 * Returns pointer to buf
19 */
20 char *hl_format_as_binary(char *buf, size_t buf_len, u32 n)
21 {
22 int i;
23 u32 bit;
24 bool leading0 = true;
25 char *wrptr = buf;
26
27 if (buf_len > 0 && buf_len < 3) {
28 *wrptr = '\0';
29 return buf;
30 }
31
32 wrptr[0] = '0';
33 wrptr[1] = 'b';
34 wrptr += 2;
35 /* Remove 3 characters from length for '0b' and '\0' termination */
36 buf_len -= 3;
37
38 for (i = 0; i < sizeof(n) * BITS_PER_BYTE && buf_len; ++i, n <<= 1) {
39 /* Writing bit calculation in one line would cause a false
40 * positive static code analysis error, so splitting.
41 */
42 bit = n & (1 << (sizeof(n) * BITS_PER_BYTE - 1));
43 bit = !!bit;
44 leading0 &= !bit;
45 if (!leading0) {
46 *wrptr = '0' + bit;
47 ++wrptr;
48 }
49 }
50
51 *wrptr = '\0';
52
53 return buf;
54 }
55

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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