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Message-ID: <202304192243.9hwJ1Cad-lkp@intel.com>
Date: Wed, 19 Apr 2023 23:01:26 +0800
From: kernel test robot <lkp@...el.com>
To: nick.hawkins@....com, verdun@....com, linus.walleij@...aro.org,
brgl@...ev.pl, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, jdelvare@...e.com,
linux@...ck-us.net, linux@...linux.org.uk,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev
Subject: Re: [PATCH v1 2/9] hwmon: (gxp_fan_ctrl) Give GPIO access to fan data
Hi,
kernel test robot noticed the following build warnings:
[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on robh/for-next linus/master v6.3-rc7]
[cannot apply to brgl/gpio/for-next next-20230418]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/nick-hawkins-hpe-com/gpio-gxp-Add-HPE-GXP-GPIO/20230418-233513
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link: https://lore.kernel.org/r/20230418152824.110823-3-nick.hawkins%40hpe.com
patch subject: [PATCH v1 2/9] hwmon: (gxp_fan_ctrl) Give GPIO access to fan data
config: hexagon-randconfig-r045-20230419 (https://download.01.org/0day-ci/archive/20230419/202304192243.9hwJ1Cad-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661)
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
# https://github.com/intel-lab-lkp/linux/commit/be3722d7f32fea1ea375090d05cbfdd3dd4e04d3
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review nick-hawkins-hpe-com/gpio-gxp-Add-HPE-GXP-GPIO/20230418-233513
git checkout be3722d7f32fea1ea375090d05cbfdd3dd4e04d3
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash block/partitions/ drivers/hwmon/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304192243.9hwJ1Cad-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/hwmon/gxp-fan-ctrl.c:7:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/hwmon/gxp-fan-ctrl.c:7:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/hwmon/gxp-fan-ctrl.c:7:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
>> drivers/hwmon/gxp-fan-ctrl.c:32:4: warning: no previous prototype for function 'get_fans_installed' [-Wmissing-prototypes]
u8 get_fans_installed(void)
^
drivers/hwmon/gxp-fan-ctrl.c:32:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u8 get_fans_installed(void)
^
static
>> drivers/hwmon/gxp-fan-ctrl.c:52:4: warning: no previous prototype for function 'get_fans_failed' [-Wmissing-prototypes]
u8 get_fans_failed(void)
^
drivers/hwmon/gxp-fan-ctrl.c:52:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u8 get_fans_failed(void)
^
static
8 warnings generated.
vim +/get_fans_installed +32 drivers/hwmon/gxp-fan-ctrl.c
31
> 32 u8 get_fans_installed(void)
33 {
34 static u8 val;
35
36 val = readb(drvdata->plreg + OFS_FAN_INST);
37
38 return val;
39 }
40 EXPORT_SYMBOL(get_fans_installed);
41
42 static long fan_failed(struct device *dev, int fan)
43 {
44 struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev);
45 u8 val;
46
47 val = readb(drvdata->plreg + OFS_FAN_FAIL);
48
49 return !!(val & BIT(fan));
50 }
51
> 52 u8 get_fans_failed(void)
53 {
54 static u8 val;
55
56 val = readb(drvdata->plreg + OFS_FAN_FAIL);
57
58 return val;
59 }
60 EXPORT_SYMBOL(get_fans_failed);
61
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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