Hi Ma,
kernel test robot noticed the following build warnings:
[auto build test WARNING on andi-shyti/i2c/i2c-host] [also build test WARNING on linus/master v6.17-rc7 next-20250926] [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/Ma-Ke/i2c-fix-reference-leak-... base: https://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git i2c/i2c-host patch link: https://lore.kernel.org/r/20250927105729.19164-1-make24%40iscas.ac.cn patch subject: [PATCH] i2c: fix reference leak in MP2 PCI device config: i386-randconfig-013-20250928 (https://download.01.org/0day-ci/archive/20250928/202509281110.ACsS1CDz-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250928/202509281110.ACsS1CDz-lkp@i...)
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/202509281110.ACsS1CDz-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/i2c/busses/i2c-amd-mp2-pci.c: In function 'amd_mp2_find_device': drivers/i2c/busses/i2c-amd-mp2-pci.c:467:9: error: 'mp2_dev' undeclared (first use in this function) 467 | mp2_dev = (struct amd_mp2_dev *)pci_get_drvdata(pci_dev); | ^~~~~~~ drivers/i2c/busses/i2c-amd-mp2-pci.c:467:9: note: each undeclared identifier is reported only once for each function it appears in
drivers/i2c/busses/i2c-amd-mp2-pci.c:470:1: warning: control reaches end of non-void function [-Wreturn-type]
470 | } | ^
vim +470 drivers/i2c/busses/i2c-amd-mp2-pci.c
529766e0a01144 Elie Morisse 2019-03-05 456 529766e0a01144 Elie Morisse 2019-03-05 457 struct amd_mp2_dev *amd_mp2_find_device(void) 529766e0a01144 Elie Morisse 2019-03-05 458 { 529766e0a01144 Elie Morisse 2019-03-05 459 struct device *dev; 529766e0a01144 Elie Morisse 2019-03-05 460 struct pci_dev *pci_dev; 529766e0a01144 Elie Morisse 2019-03-05 461 6bf85ba9e55f65 Suzuki K Poulose 2019-07-23 462 dev = driver_find_next_device(&amd_mp2_pci_driver.driver, NULL); 529766e0a01144 Elie Morisse 2019-03-05 463 if (!dev) 529766e0a01144 Elie Morisse 2019-03-05 464 return NULL; 529766e0a01144 Elie Morisse 2019-03-05 465 529766e0a01144 Elie Morisse 2019-03-05 466 pci_dev = to_pci_dev(dev); 10a231ddf6f43e Ma Ke 2025-09-27 467 mp2_dev = (struct amd_mp2_dev *)pci_get_drvdata(pci_dev); 10a231ddf6f43e Ma Ke 2025-09-27 468 put_device(dev); 10a231ddf6f43e Ma Ke 2025-09-27 469 return mp2_dev; 529766e0a01144 Elie Morisse 2019-03-05 @470 } 529766e0a01144 Elie Morisse 2019-03-05 471 EXPORT_SYMBOL_GPL(amd_mp2_find_device); 529766e0a01144 Elie Morisse 2019-03-05 472