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Message-ID: <4dabc78a-f9ee-4e7d-8bf3-ea1c6cef8530@intel.com>
Date: Thu, 19 Aug 2021 11:24:02 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Cristian Marussi <cristian.marussi@....com>
CC: <clang-built-linux@...glegroups.com>, <kbuild-all@...ts.01.org>,
<linux-kernel@...r.kernel.org>, Mark Brown <broonie@...nel.org>
Subject: [kbuild] drivers/regulator/bd718x7-regulator.c:531:8: warning:
Excessive padding in 'struct bd718xx_regulator_data' (8 padding bytes, where
0 is optimal).
tree:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 794c7931a2428a656551f2179e6a093233a6e0aa
commit: e7095c35abfc5a5d566941a87434c0fd5ffb570f regulator: core: add
of_match_full_name boolean flag
date: 9 months ago
:::::: branch date: 12 hours ago
:::::: commit date: 9 months ago
config: arm-randconfig-c002-20210816 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
44d0a99a12ec7ead4d2f5ef649ba05b40f6d463d)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e7095c35abfc5a5d566941a87434c0fd5ffb570f
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e7095c35abfc5a5d566941a87434c0fd5ffb570f
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
ARCH=arm clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
clang-analyzer warnings: (new ones prefixed by >>)
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/regulator/as3722-regulator.c:46:8: warning: Excessive
padding in 'struct as3722_register_mapping' (14 padding bytes, where 2
is optimal).
Optimal fields order:
name,
sname,
n_voltages,
enable_reg,
control_reg,
sleep_ctrl_reg,
regulator_id,
vsel_reg,
vsel_mask,
enable_mask,
mode_mask,
sleep_ctrl_mask,
consider reordering the fields or adding explicit padding members
[clang-analyzer-optin.performance.Padding]
struct as3722_register_mapping {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/regulator/as3722-regulator.c:46:8: note: Excessive padding
in 'struct as3722_register_mapping' (14 padding bytes, where 2 is
optimal). Optimal fields order: name, sname, n_voltages, enable_reg,
control_reg, sleep_ctrl_reg, regulator_id, vsel_reg, vsel_mask,
enable_mask, mode_mask, sleep_ctrl_mask, consider reordering the fields
or adding explicit padding members
struct as3722_register_mapping {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
5 warnings generated.
>> drivers/regulator/bd718x7-regulator.c:531:8: warning: Excessive
padding in 'struct bd718xx_regulator_data' (8 padding bytes, where 0 is
optimal).
Optimal fields order:
dvs,
additional_inits,
additional_init_amnt,
init,
desc,
consider reordering the fields or adding explicit padding members
[clang-analyzer-optin.performance.Padding]
struct bd718xx_regulator_data {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
drivers/regulator/bd718x7-regulator.c:531:8: note: Excessive padding
in 'struct bd718xx_regulator_data' (8 padding bytes, where 0 is
optimal). Optimal fields order: dvs, additional_inits,
additional_init_amnt, init, desc, consider reordering the fields or
adding explicit padding members
struct bd718xx_regulator_data {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
drivers/gpu/drm/drm_self_refresh_helper.c:85:3: warning: Value
stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = -ENOMEM;
^ ~~~~~~~
drivers/gpu/drm/drm_self_refresh_helper.c:85:3: note: Value stored
to 'ret' is never read
ret = -ENOMEM;
^ ~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated.
drivers/gpu/drm/drm_fb_helper.c:156:24: warning: Value stored to
'helper' during its initialization is never read
[clang-analyzer-deadcode.DeadStores]
struct drm_fb_helper *helper = info->par;
^~~~~~ ~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:156:24: note: Value stored to
'helper' during its initialization is never read
struct drm_fb_helper *helper = info->par;
^~~~~~ ~~~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
vim +531 drivers/regulator/bd718x7-regulator.c
ba08799e90b593 drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-05-30 525
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 526 struct reg_init {
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 527 unsigned int reg;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 528 unsigned int mask;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 529 unsigned int val;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 530 };
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 @531 struct bd718xx_regulator_data {
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 532 struct regulator_desc desc;
21b72156ede8b7 drivers/regulator/bd718x7-regulator.c Matti Vaittinen
2020-01-20 533 const struct rohm_dvs_config dvs;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 534 const struct reg_init init;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 535 const struct reg_init *additional_inits;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 536 int additional_init_amnt;
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 537 };
494edd266b945f drivers/regulator/bd71837-regulator.c Matti Vaittinen
2018-09-14 538
:::::: The code at line 531 was first introduced by commit
:::::: 494edd266b945f36908184433dd36eda1719cdb0 regulator/mfd: Support
ROHM BD71847 power management IC
:::::: TO: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
:::::: CC: Mark Brown <broonie@...nel.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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