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Message-ID: <202509041246.7GqISV63-lkp@intel.com>
Date: Thu, 4 Sep 2025 13:07:53 +0800
From: kernel test robot <lkp@...el.com>
To: Akhilesh Patil <akhilesh@...iitb.ac.in>, alexandre.belloni@...tlin.com,
krzk+dt@...nel.org, robh@...nel.org, conor+dt@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
skhan@...uxfoundation.org, linux-rtc@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
akhileshpatilvnit@...il.com
Subject: Re: [PATCH 4/7] rtc: m41t93: Add alarm support
Hi Akhilesh,
kernel test robot noticed the following build warnings:
[auto build test WARNING on abelloni/rtc-next]
[also build test WARNING on linus/master v6.17-rc4 next-20250903]
[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/Akhilesh-Patil/rtc-m41t93-add-device-tree-support/20250903-223155
base: https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next
patch link: https://lore.kernel.org/r/4f78f8fa113d4262e162972f5c15155410a64e8b.1756908788.git.akhilesh%40ee.iitb.ac.in
patch subject: [PATCH 4/7] rtc: m41t93: Add alarm support
config: loongarch-randconfig-002-20250904 (https://download.01.org/0day-ci/archive/20250904/202509041246.7GqISV63-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 2e122990391b2ba062e6308a12cfedf7206270ba)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250904/202509041246.7GqISV63-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/202509041246.7GqISV63-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/rtc/rtc-m41t93.c:244:3: warning: implicit conversion from 'unsigned long' to 'unsigned int' changes value from 18446744073709551455 to 4294967135 [-Wconstant-conversion]
243 | val = enabled ? M41T93_BIT_A1IE | M41T93_BIT_ABE :
| ~
244 | ~(M41T93_BIT_A1IE | M41T93_BIT_ABE);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
vim +244 drivers/rtc/rtc-m41t93.c
236
237 static int m41t93_alarm_irq_enable(struct device *dev, unsigned int enabled)
238 {
239 struct m41t93_data *m41t93 = dev_get_drvdata(dev);
240 unsigned int val;
241 int ret;
242
243 val = enabled ? M41T93_BIT_A1IE | M41T93_BIT_ABE :
> 244 ~(M41T93_BIT_A1IE | M41T93_BIT_ABE);
245
246 ret = regmap_update_bits(m41t93->regmap, M41T93_REG_AL1_MONTH,
247 M41T93_BIT_A1IE | M41T93_BIT_ABE, val);
248 if (ret)
249 return ret;
250
251 return 0;
252 }
253
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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