[chrome-os:chromeos-6.6 31/31] drivers/hid/spi-hid/spi-hid-core.c:361:8: warning: 'const' type qualifier on return type has no effect

[chrome-os:chromeos-6.6 31/31] drivers/hid/spi-hid/spi-hid-core.c:361:8: warning: 'const' type qualifier on return type has no effect

[kernel test robot]

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-6.6
head:   a4d01e77dd885e0545ecd445e2facf156ddf42f5
commit: b61fdddf40df4657f4c32f5241508cd3a4ce4ec4 [31/31] CHROMIUM: HID: spi_hid: add ACPI support for SPI over HID
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20260610/202606100102.godb97gP-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 7917772d7d61384696c61102c08c2ea158e610fa)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260610/202606100102.godb97gP-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606100102.godb97gP-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/hid/spi-hid/spi-hid-core.c:361:8: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
     361 | static const u32 spi_hid_get_timeout(struct spi_hid *shid)
         |        ^~~~~
   drivers/hid/spi-hid/spi-hid-core.c:247:13: warning: unused function 'spi_hid_suspend' [-Wunused-function]
     247 | static void spi_hid_suspend(struct spi_hid *shid)
         |             ^~~~~~~~~~~~~~~
   drivers/hid/spi-hid/spi-hid-core.c:252:13: warning: unused function 'spi_hid_resume' [-Wunused-function]
     252 | static void spi_hid_resume(struct spi_hid *shid)
         |             ^~~~~~~~~~~~~~
   3 warnings generated.


vim +/const +361 drivers/hid/spi-hid/spi-hid-core.c

b92291c9316fb3a Angela Czubak  2023-03-24  360  
890ead8d6ab51b2 Jingyuan Liang 2026-01-15 @361  static const u32 spi_hid_get_timeout(struct spi_hid *shid)
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  362  {
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  363  	struct device *dev = &shid->spi->dev;
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  364  	u32 timeout;
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  365  
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  366  	timeout = READ_ONCE(shid->ops->response_timeout_ms);
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  367  
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  368  	if (timeout < SPI_HID_RESPONSE_TIMEOUT_MS || timeout > 10000) {
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  369  		dev_warn(dev, "Response timeout is out of range, using default %d",
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  370  			SPI_HID_RESPONSE_TIMEOUT_MS);
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  371  		timeout = SPI_HID_RESPONSE_TIMEOUT_MS;
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  372  	}
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  373  
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  374  	return timeout;
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  375  }
890ead8d6ab51b2 Jingyuan Liang 2026-01-15  376  

:::::: The code at line 361 was first introduced by commit
:::::: 890ead8d6ab51b21af1605ec22461e81ba6064dc CHROMIUM: HID:spi-hid: add quirk to support mode switch

:::::: TO: Jingyuan Liang <jingyliang@chromium.org>
:::::: CC: chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki