[PATCH v1 3/3] reset: npcm: add NPCM reset controller driver
kbuild test robot
lkp at intel.com
Mon Oct 28 11:40:59 AEDT 2019
Hi Tomer,
I love your patch! Perhaps something to improve:
[auto build test WARNING on pza/reset/next]
[also build test WARNING on v5.4-rc5 next-20191025]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Tomer-Maimon/reset-npcm-add-NPCM-reset-driver-support/20191028-025236
base: https://git.pengutronix.de/git/pza/linux reset/next
config: c6x-allyesconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=c6x
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp at intel.com>
Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
All warnings (new ones prefixed by >>):
In file included from drivers//reset/reset-npcm.c:15:0:
drivers//reset/reset-npcm.c: In function 'npcm_rc_probe':
>> include/linux/regmap.h:75:2: warning: 'gcr_regmap' may be used uninitialized in this function [-Wmaybe-uninitialized]
regmap_update_bits_base(map, reg, mask, val, NULL, false, false)
^~~~~~~~~~~~~~~~~~~~~~~
drivers//reset/reset-npcm.c:131:17: note: 'gcr_regmap' was declared here
struct regmap *gcr_regmap;
^~~~~~~~~~
--
In file included from drivers/reset/reset-npcm.c:15:0:
drivers/reset/reset-npcm.c: In function 'npcm_rc_probe':
>> include/linux/regmap.h:75:2: warning: 'gcr_regmap' may be used uninitialized in this function [-Wmaybe-uninitialized]
regmap_update_bits_base(map, reg, mask, val, NULL, false, false)
^~~~~~~~~~~~~~~~~~~~~~~
drivers/reset/reset-npcm.c:131:17: note: 'gcr_regmap' was declared here
struct regmap *gcr_regmap;
^~~~~~~~~~
vim +/gcr_regmap +75 include/linux/regmap.h
8019ff6cfc0440 Nariman Poushin 2015-07-16 73
ca7a94464b5457 Kuninori Morimoto 2016-02-15 74 #define regmap_update_bits(map, reg, mask, val) \
ca7a94464b5457 Kuninori Morimoto 2016-02-15 @75 regmap_update_bits_base(map, reg, mask, val, NULL, false, false)
30ed9cb7a49b49 Kuninori Morimoto 2016-02-15 76 #define regmap_update_bits_async(map, reg, mask, val)\
30ed9cb7a49b49 Kuninori Morimoto 2016-02-15 77 regmap_update_bits_base(map, reg, mask, val, NULL, true, false)
98c2dc48694a47 Kuninori Morimoto 2016-02-15 78 #define regmap_update_bits_check(map, reg, mask, val, change)\
98c2dc48694a47 Kuninori Morimoto 2016-02-15 79 regmap_update_bits_base(map, reg, mask, val, change, false, false)
89d8d4b833b0b2 Kuninori Morimoto 2016-02-15 80 #define regmap_update_bits_check_async(map, reg, mask, val, change)\
89d8d4b833b0b2 Kuninori Morimoto 2016-02-15 81 regmap_update_bits_base(map, reg, mask, val, change, true, false)
ca7a94464b5457 Kuninori Morimoto 2016-02-15 82
:::::: The code at line 75 was first introduced by commit
:::::: ca7a94464b5457a8dc5add19f6fc3bea59d6193f regmap: merge regmap_update_bits() into macro
:::::: TO: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
:::::: CC: Mark Brown <broonie at kernel.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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