From: kernel test robot <lkp@intel.com>
To: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
Wolfram Sang <wsa-dev@sang-engineering.com>,
Srinivas Kandagatla <srini@kernel.org>
Subject: drivers/nvmem/m24lr.c:343:24: sparse: sparse: cast to restricted __le16
Date: Thu, 17 Sep 2026 16:41:47 +0800 [thread overview]
Message-ID: <202609171615.pqY38RUJ-lkp@intel.com> (raw)
Hi Bartosz,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9b87fdc9af2fbfcdb5c24a64139685ef80f6573f
commit: cf09b7a05618bea99468b67fe80202efba1b48ad eeprom: move nvmem EEPROM drivers to drivers/nvmem/
date: 7 weeks ago
config: x86_64-randconfig-1301-20260917 (https://download.01.org/0day-ci/archive/20260917/202609171615.pqY38RUJ-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260917/202609171615.pqY38RUJ-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
| Fixes: cf09b7a05618 ("eeprom: move nvmem EEPROM drivers to drivers/nvmem/")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609171615.pqY38RUJ-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/nvmem/m24lr.c:343:24: sparse: sparse: cast to restricted __le16
>> drivers/nvmem/m24lr.c:343:24: sparse: sparse: cast from restricted __le64
>> drivers/nvmem/m24lr.c:346:24: sparse: sparse: cast to restricted __le32
drivers/nvmem/m24lr.c:346:24: sparse: sparse: cast from restricted __le64
vim +343 drivers/nvmem/m24lr.c
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 323
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 324 static ssize_t m24lr_read_reg_le(struct m24lr *m24lr, u64 *val,
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 325 unsigned int reg_addr,
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 326 unsigned int reg_size)
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 327 {
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 328 ssize_t ret;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 329 __le64 input = 0;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 330
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 331 ret = m24lr_read(m24lr, (u8 *)&input, reg_size, reg_addr, false);
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 332 if (IS_ERR_VALUE(ret))
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 333 return ret;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 334
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 335 if (ret != reg_size)
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 336 return -EINVAL;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 337
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 338 switch (reg_size) {
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 339 case 1:
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 340 *val = *(u8 *)&input;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 341 break;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 342 case 2:
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 @343 *val = le16_to_cpu((__le16)input);
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 344 break;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 345 case 4:
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 @346 *val = le32_to_cpu((__le32)input);
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 347 break;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 348 case 8:
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 349 *val = le64_to_cpu((__le64)input);
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 350 break;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 351 default:
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 352 return -EINVAL;
b009c1dbfc9854c drivers/misc/eeprom/m24lr.c Chen Ni 2025-08-21 353 }
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 354
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 355 return 0;
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 356 }
cd5c5e0231c538a drivers/misc/eeprom/m24lr.c Abd-Alrhman Masalkhi 2025-07-17 357
:::::: The code at line 343 was first introduced by commit
:::::: cd5c5e0231c538a5d2d4a73f3b3ffc77ff08449c eeprom: add driver for ST M24LR series RFID/NFC EEPROM chips
:::::: TO: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-17 8:42 UTC|newest]
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