Hi Dongliang, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.14-rc5 next-20210809] [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] url: https://github.com/0day-ci/linux/commits/Dongliang-Mu/ipack-tpci200-fix-many-double-free-issues-in-tpci200_pci_probe/20210809-223416 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 36a21d51725af2ce0700c6ebcb6b9594aac658a6 config: i386-randconfig-a004-20210808 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/aab1c45ab3f37910ebb6f00f951c74ee88e25094 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dongliang-Mu/ipack-tpci200-fix-many-double-free-issues-in-tpci200_pci_probe/20210809-223416 git checkout aab1c45ab3f37910ebb6f00f951c74ee88e25094 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/ipack/carriers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from include/linux/io.h:13, from include/linux/pci.h:39, from drivers/ipack/carriers/tpci200.h:14, from drivers/ipack/carriers/tpci200.c:12: drivers/ipack/carriers/tpci200.c: In function 'tpci200_unregister': >> arch/x86/include/asm/io.h:210:17: error: too many arguments to function 'iounmap' 210 | #define iounmap iounmap | ^~~~~~~ drivers/ipack/carriers/tpci200.c:91:2: note: in expansion of macro 'iounmap' 91 | iounmap(tpci200->info->pdev, tpci200->info->interface_regs); | ^~~~~~~ arch/x86/include/asm/io.h:209:13: note: declared here 209 | extern void iounmap(volatile void __iomem *addr); | ^~~~~~~ vim +/iounmap +210 arch/x86/include/asm/io.h 133822c5c038b2 Jeremy Fitzhardinge 2009-02-06 208 133822c5c038b2 Jeremy Fitzhardinge 2009-02-06 209 extern void iounmap(volatile void __iomem *addr); 80b9ece1339374 Andy Shevchenko 2017-06-30 @210 #define iounmap iounmap 133822c5c038b2 Jeremy Fitzhardinge 2009-02-06 211 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org