Hi Dan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net/master] [also build test WARNING on driver-core/driver-core-testing linus/master v5.5 next-20200131] [cannot apply to sparc-next/master] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Dan-Carpenter/device-property-change-device_get_phy_mode-to-prevent-signedess-bugs/20200203-043126 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git b7c3a17c6062701d97a0959890a2c882bfaac537 reproduce: # apt-get install sparse # sparse version: v0.6.1-154-g1dc00f87-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) arch/x86/boot/compressed/cmdline.c:5:20: sparse: sparse: multiple definitions for function 'set_fs' >> arch/x86/include/asm/uaccess.h:29:20: sparse: the previous one is here arch/x86/boot/compressed/../cmdline.c:28:5: sparse: sparse: symbol '__cmdline_find_option' was not declared. Should it be static? arch/x86/boot/compressed/../cmdline.c:100:5: sparse: sparse: symbol '__cmdline_find_option_bool' was not declared. Should it be static? vim +29 arch/x86/include/asm/uaccess.h ca23386216b9d4 include/asm-x86/uaccess.h Glauber Costa 2008-06-13 27 13d4ea097d18b4 arch/x86/include/asm/uaccess.h Andy Lutomirski 2016-07-14 28 #define get_fs() (current->thread.addr_limit) 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 @29 static inline void set_fs(mm_segment_t fs) 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 30 { 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 31 current->thread.addr_limit = fs; 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 32 /* On user-mode return, check fs is correct */ 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 33 set_thread_flag(TIF_FSCHECK); 5ea0727b163cb5 arch/x86/include/asm/uaccess.h Thomas Garnier 2017-06-14 34 } ca23386216b9d4 include/asm-x86/uaccess.h Glauber Costa 2008-06-13 35 :::::: The code at line 29 was first introduced by commit :::::: 5ea0727b163cb5575e36397a12eade68a1f35f24 x86/syscalls: Check address limit on user-mode return :::::: TO: Thomas Garnier <thgarnie@xxxxxxxxxx> :::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation