Re: [PATCH linux v6 1/6] hwmon: Add core On-Chip Controller support for POWER CPUs

From: kbuild test robot
Date: Mon Feb 06 2017 - 18:21:51 EST


Hi Edward,

[auto build test WARNING on hwmon/hwmon-next]
[also build test WARNING on v4.10-rc7 next-20170206]
[cannot apply to linux/master]
[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/eajames-linux-vnet-ibm-com/drivers-hwmon-Add-On-Chip-Controller-driver/20170207-043353
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: openrisc-allyesconfig (attached as .config)
compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=openrisc

All warnings (new ones prefixed by >>):

drivers/hwmon/occ/occ.c: In function 'parse_occ_response':
>> drivers/hwmon/occ/occ.c:127:6: warning: unused variable 'rc'

vim +/rc +127 drivers/hwmon/occ/occ.c

111 struct device *dev;
112 void *bus;
113 struct occ_bus_ops bus_ops;
114 struct occ_ops ops;
115 struct occ_config config;
116 unsigned long last_updated;
117 struct mutex update_lock;
118 struct occ_response response;
119 bool valid;
120 u8 *raw_data;
121 };
122
123 static int parse_occ_response(struct occ *driver, u16 num_bytes)
124 {
125 int b;
126 int s;
> 127 int rc;
128 unsigned int offset = SENSOR_BLOCK_OFFSET;
129 int sensor_type;
130 u8 num_sensor_blocks;
131 struct sensor_data_block_header *block;
132 void *sensors;
133 struct device *dev = driver->dev;
134 u8 *data = driver->raw_data;
135 struct occ_response *resp = &driver->response;

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