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SubjectRe: [PATCH] hwmon: (pmbus) Expose PEC debugfs attribute
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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 <lkp@intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@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-all@lists.01.org
>

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