Re: [PATCH v3 10/21] nvmem: change the signature of nvmem_unregister()

From: kbuild test robot
Date: Wed Sep 12 2018 - 20:40:57 EST


Hi Bartosz,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.19-rc3 next-20180912]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Bartosz-Golaszewski/nvmem-rework-of-the-subsystem-for-non-DT-users/20180913-071053
config: m68k-sun3_defconfig (attached as .config)
compiler: m68k-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
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=7.2.0 make.cross ARCH=m68k

All warnings (new ones prefixed by >>):

In file included from include/linux/rtc.h:18:0,
from include/linux/alarmtimer.h:8,
from include/linux/posix-timers.h:9,
from include/linux/posix-clock.h:26,
from drivers//ptp/ptp_clock.c:26:
include/linux/nvmem-provider.h: In function 'devm_nvmem_unregister':
>> include/linux/nvmem-provider.h:101:9: warning: return makes integer from pointer without a cast [-Wint-conversion]
return ERR_PTR(-ENOSYS);
^~~~~~~~~~~~~~~~

vim +101 include/linux/nvmem-provider.h

97
98 static inline int
99 devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
100 {
> 101 return ERR_PTR(-ENOSYS);
102

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