* Re: [PATCH net-next 2/2] net: phy: Introduce Airoha AN8801/R Gigabit Ethernet PHY driver
[not found] <20260304-add-airoha-an8801-support-v1-2-0ae4ee5a2f9d@collabora.com>
@ 2026-03-04 22:13 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-04 22:13 UTC (permalink / raw)
To: Louis-Alexis Eyraud, Andrew Lunn, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, AngeloGioacchino Del Regno, Heiner Kallweit,
Russell King
Cc: llvm, oe-kbuild-all, netdev, kevin-kw.huang, macpaul.lin,
matthias.bgg, kernel, devicetree, linux-arm-kernel,
linux-mediatek, linux-kernel, Louis-Alexis Eyraud
Hi Louis-Alexis,
kernel test robot noticed the following build warnings:
[auto build test WARNING on ed0abfe93fd135dac223e87a3c945017b1fa8bfc]
url: https://github.com/intel-lab-lkp/linux/commits/Louis-Alexis-Eyraud/dt-bindings-net-Add-support-for-Airoha-AN8801-R-GbE-PHY/20260304-174023
base: ed0abfe93fd135dac223e87a3c945017b1fa8bfc
patch link: https://lore.kernel.org/r/20260304-add-airoha-an8801-support-v1-2-0ae4ee5a2f9d%40collabora.com
patch subject: [PATCH net-next 2/2] net: phy: Introduce Airoha AN8801/R Gigabit Ethernet PHY driver
config: sparc64-allmodconfig (https://download.01.org/0day-ci/archive/20260305/202603050606.eulVmYcb-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 9a109fbb6e184ec9bcce10615949f598f4c974a9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260305/202603050606.eulVmYcb-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/202603050606.eulVmYcb-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/net/phy/air_an8801.c:258:6: warning: variable 'pbus_data_h' is uninitialized when used here [-Wuninitialized]
258 | if (pbus_data_h < 0)
| ^~~~~~~~~~~
drivers/net/phy/air_an8801.c:240:30: note: initialize the variable 'pbus_data_h' to silence this warning
240 | int pbus_data_l, pbus_data_h;
| ^
| = 0
1 warning generated.
vim +/pbus_data_h +258 drivers/net/phy/air_an8801.c
236
237 static int __air_buckpbus_reg_read(struct phy_device *phydev,
238 u32 addr, u32 *data)
239 {
240 int pbus_data_l, pbus_data_h;
241 int ret;
242
243 addr |= AN8801_PBUS_ACCESS;
244
245 ret = __phy_write(phydev, AIR_BPBUS_MODE, MII_MMD_CTRL_ADDR);
246 if (ret < 0)
247 return ret;
248
249 ret = __phy_write(phydev, AIR_BPBUS_RD_ADDR_HIGH, upper_16_bits(addr));
250 if (ret < 0)
251 return ret;
252
253 ret = __phy_write(phydev, AIR_BPBUS_RD_ADDR_LOW, lower_16_bits(addr));
254 if (ret < 0)
255 return ret;
256
257 ret = __phy_read(phydev, AIR_BPBUS_RD_DATA_HIGH);
> 258 if (pbus_data_h < 0)
259 return pbus_data_h;
260
261 pbus_data_l = __phy_read(phydev, AIR_BPBUS_RD_DATA_LOW);
262 if (pbus_data_l < 0)
263 return pbus_data_l;
264
265 *data = (pbus_data_h << 16) | pbus_data_l;
266 return 0;
267 }
268
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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