On 9/10/20 3:05 AM, Dan Carpenter wrote:
> Hi Andrew,
> 
> url:    
> https://github.com/0day-ci/linux/commits/Andrew-Jeffery/hwmon-pmbus-Expose-PEC-debugfs-attribute/20200910-010642
> base:   
> https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git 
> hwmon-next
> config: x86_64-randconfig-m001-20200909 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <l...@intel.com>
> Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
> 
> smatch warnings:
> drivers/hwmon/pmbus/pmbus_core.c:2415 pmbus_debugfs_ops_pec_open() warn: '0x' 
> prefix is confusing together with '%1llu' specifier
> 
> # 
> https://github.com/0day-ci/linux/commit/705b8b5588d4102256d0954086ed16c9bdf9804f
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review 
> Andrew-Jeffery/hwmon-pmbus-Expose-PEC-debugfs-attribute/20200910-010642
> git checkout 705b8b5588d4102256d0954086ed16c9bdf9804f
> vim +2415 drivers/hwmon/pmbus/pmbus_core.c
> 
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2391  static int 
> pmbus_debugfs_set_pec(void *data, u64 val)
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2392  {
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2393        int rc;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2394        struct i2c_client 
> *client = data;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2395  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2396        if (!val) {
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2397                client->flags 
> &= ~I2C_CLIENT_PEC;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2398                return 0;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2399        }
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2400  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2401        if (val != 1)
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2402                return -EINVAL;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2403  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2404        rc = 
> i2c_smbus_read_byte_data(client, PMBUS_CAPABILITY);
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2405        if (rc < 0)
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2406                return rc;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2407  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2408        if (!(rc & 
> PB_CAPABILITY_ERROR_CHECK))
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2409                return 
> -ENOTSUPP;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2410  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2411        client->flags |= 
> I2C_CLIENT_PEC;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2412  
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2413        return 0;
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2414  }
> 705b8b5588d410 Andrew Jeffery 2020-09-09 @2415  
> DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_pec, pmbus_debugfs_get_pec,
> 705b8b5588d410 Andrew Jeffery 2020-09-09  2416                         
> pmbus_debugfs_set_pec, "0x%1llu\n");
>                                                                               
>                    ^^^^^^^
> Was the 1 intentional?  Anyway, you probably want to remove the 0x so
> it doesn't look like hex.
> 

Nice catch; I didn't notice the 1. It is still there in v2, but it does seem 
quite useless.

Guenter

> 705b8b5588d410 Andrew Jeffery 2020-09-09  2417  
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
> 

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