Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on v5.4-rc7 next-20191112] [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/Eugen-Hristev-microchip-com/watc... base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/watchdog/at91sam9_wdt.c: In function 'at91_wdt_reset': writel_relaxed((val), (wdt)->base + (field)) ^ wdt_write(wdt, AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT); ^~~~~~~~~ -- In file included from drivers/watchdog/sama5d4_wdt.c:19:0: drivers/watchdog/sama5d4_wdt.c: In function 'sama5d4_wdt_ping': #define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */ ^ wdt_write(wdt, AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT); ^~~~~~~~~~~~ vim +18 drivers/watchdog/at91sam9_wdt.h eaa595cb881bba include/asm-arm/arch-at91rm9200/at91_wdt.h Andrew Victor 2006-11-30 15 c1c30a29df7e47 drivers/watchdog/at91sam9_wdt.h Jean-Christophe PLAGNIOL-VILLARD 2011-11-02 16 #define AT91_WDT_CR 0x00 /* Watchdog Control Register */ 70008fc3a14154 drivers/watchdog/at91sam9_wdt.h Eugen Hristev 2019-11-11 17 #define AT91_WDT_WDRSTT BIT(0) /* Restart */ 0e5f82dda5e60a include/asm-arm/arch-at91/at91_wdt.h Andrew Victor 2007-05-31 @18 #define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */ eaa595cb881bba include/asm-arm/arch-at91rm9200/at91_wdt.h Andrew Victor 2006-11-30 19 :::::: The code at line 18 was first introduced by commit :::::: 0e5f82dda5e60a21cf8ba4f77334d60290277d2c [ARM] 4421/1: AT91: Value of _KEY fields. :::::: TO: Andrew Victor <andrew(a)sanpeople.com&gt; :::::: CC: Russell King <rmk+kernel(a)arm.linux.org.uk&gt; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation