CC: [email protected]
In-Reply-To: 
<eaee0947c813b04b77ee8364724d1a406dccc33b.1634029538.git.krzysztof.adam...@nokia.com>
References: 
<eaee0947c813b04b77ee8364724d1a406dccc33b.1634029538.git.krzysztof.adam...@nokia.com>
TO: Krzysztof Adamski <[email protected]>
TO: Guenter Roeck <[email protected]>
TO: Jean Delvare <[email protected]>
CC: Rob Herring <[email protected]>
CC: [email protected]
CC: [email protected]

Hi Krzysztof,

I love your patch! Perhaps something to improve:

[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on next-20211012]
[cannot apply to robh/for-next v5.15-rc5]
[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]

url:    
https://github.com/0day-ci/linux/commits/Krzysztof-Adamski/Add-per-channel-properies-support-in-tmp421/20211012-173142
base:   
https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git 
hwmon-next
:::::: branch date: 13 hours ago
:::::: commit date: 13 hours ago
config: i386-randconfig-m031-20211012 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>

smatch warnings:
drivers/hwmon/tmp421.c:178 tmp421_enable_channels() error: uninitialized symbol 
'err'.

vim +/err +178 drivers/hwmon/tmp421.c

9410700b881f86 Andre Prendel     2009-09-15  167  
4a0f8262fe071b Krzysztof Adamski 2021-10-12  168  static int 
tmp421_enable_channels(struct tmp421_data *data)
4a0f8262fe071b Krzysztof Adamski 2021-10-12  169  {
4a0f8262fe071b Krzysztof Adamski 2021-10-12  170        int err;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  171        struct i2c_client 
*client = data->client;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  172        struct device *dev = 
&client->dev;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  173        int cfg = 
i2c_smbus_read_byte_data(client, TMP421_CONFIG_REG_2);
4a0f8262fe071b Krzysztof Adamski 2021-10-12  174        int i;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  175  
4a0f8262fe071b Krzysztof Adamski 2021-10-12  176        if (cfg < 0) {
4a0f8262fe071b Krzysztof Adamski 2021-10-12  177                dev_err(dev, 
"error reading register, can't disable channels\n");
4a0f8262fe071b Krzysztof Adamski 2021-10-12 @178                return err;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  179        }
4a0f8262fe071b Krzysztof Adamski 2021-10-12  180  
4a0f8262fe071b Krzysztof Adamski 2021-10-12  181        cfg &= 
~TMP421_CONFIG_REG_REN_MASK;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  182        for (i = 0; i < 
data->channels; i++)
4a0f8262fe071b Krzysztof Adamski 2021-10-12  183                if 
(data->channel[i].enabled)
4a0f8262fe071b Krzysztof Adamski 2021-10-12  184                        cfg |= 
TMP421_CONFIG_REG_REN(i);
4a0f8262fe071b Krzysztof Adamski 2021-10-12  185  
4a0f8262fe071b Krzysztof Adamski 2021-10-12  186        err = 
i2c_smbus_write_byte_data(client, TMP421_CONFIG_REG_2, cfg);
4a0f8262fe071b Krzysztof Adamski 2021-10-12  187        if (err < 0)
4a0f8262fe071b Krzysztof Adamski 2021-10-12  188                dev_err(dev, 
"error writing register, can't disable channels\n");
4a0f8262fe071b Krzysztof Adamski 2021-10-12  189  
4a0f8262fe071b Krzysztof Adamski 2021-10-12  190        return err;
4a0f8262fe071b Krzysztof Adamski 2021-10-12  191  }
4a0f8262fe071b Krzysztof Adamski 2021-10-12  192  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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