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Message-ID: <202407202146.evcwKAKb-lkp@intel.com>
Date: Sat, 20 Jul 2024 21:40:38 +0800
From: kernel test robot <lkp@...el.com>
To: marius.cristea@...rochip.com, jic23@...nel.org, lars@...afoo.de,
robh+dt@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, marius.cristea@...rochip.com
Subject: Re: [PATCH v1 2/2] iio: adc: adding support for PAC194X
Hi,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.10 next-20240719]
[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/marius-cristea-microchip-com/dt-bindings-iio-adc-adding-support-for-PAC194X/20240720-014249
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240719173855.53261-3-marius.cristea%40microchip.com
patch subject: [PATCH v1 2/2] iio: adc: adding support for PAC194X
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240720/202407202146.evcwKAKb-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project ad154281230d83ee551e12d5be48bb956ef47ed3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240720/202407202146.evcwKAKb-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407202146.evcwKAKb-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/iio/adc/pac1944.c:16:
In file included from include/linux/acpi.h:14:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:2258:
include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
500 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
501 | item];
| ~~~~
include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
507 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
508 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
519 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
520 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
528 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
529 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/adc/pac1944.c:1691:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
1691 | if (time_after(jiffies, info->chip_reg_data.jiffies_tstamp +
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1692 | msecs_to_jiffies(PAC1944_MIN_POLLING_TIME_MS))) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/jiffies.h:128:2: note: expanded from macro 'time_after'
128 | (typecheck(unsigned long, a) && \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
129 | typecheck(unsigned long, b) && \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
130 | ((long)((b) - (a)) < 0))
| ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/adc/pac1944.c:1709:9: note: uninitialized use occurs here
1709 | return ret;
| ^~~
drivers/iio/adc/pac1944.c:1691:2: note: remove the 'if' if its condition is always true
1691 | if (time_after(jiffies, info->chip_reg_data.jiffies_tstamp +
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1692 | msecs_to_jiffies(PAC1944_MIN_POLLING_TIME_MS))) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/adc/pac1944.c:1686:9: note: initialize the variable 'ret' to silence this warning
1686 | int ret;
| ^
| = 0
drivers/iio/adc/pac1944.c:2048:16: warning: variable 'idx' set but not used [-Wunused-but-set-variable]
2048 | int ch, i, j, idx;
| ^
7 warnings generated.
vim +1691 drivers/iio/adc/pac1944.c
1683
1684 static int pac1944_retrieve_data(struct pac1944_chip_info *info, u32 wait_time)
1685 {
1686 int ret;
1687 /*
1688 * Check if the minimal elapsed time has passed and if so,
1689 * re-read the chip, otherwise the cached info is just fine
1690 */
> 1691 if (time_after(jiffies, info->chip_reg_data.jiffies_tstamp +
1692 msecs_to_jiffies(PAC1944_MIN_POLLING_TIME_MS))) {
1693 /*
1694 * We need to re-read the chip values
1695 * call the pac1944_reg_snapshot
1696 */
1697 ret = pac1944_reg_snapshot(info, true,
1698 PAC1944_REFRESH_REG_ADDR,
1699 wait_time);
1700 /*
1701 * Re-schedule the work for the read registers timeout
1702 * (to prevent chip regs saturation)
1703 */
1704 cancel_delayed_work_sync(&info->work_chip_rfsh);
1705 schedule_delayed_work(&info->work_chip_rfsh,
1706 msecs_to_jiffies(PAC1944_MAX_RFSH_LIMIT_MS));
1707 }
1708
1709 return ret;
1710 }
1711
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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