Hi pascal, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on ljones-mfd/for-mfd-next] [also build test WARNING on v4.19-rc7 next-20181008] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Pascal-PAILLET-LME/Introduce-STPMIC1-PMIC-Driver/20181009-042808 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: ia64-allyesconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 8.1.0 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=8.1.0 make.cross ARCH=ia64 All warnings (new ones prefixed by >>): In file included from drivers/watchdog/stpmic1_wdt.c:10: drivers/watchdog/stpmic1_wdt.c: In function 'pmic_wdt_stop': >> drivers/watchdog/stpmic1_wdt.c:48:33: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551614' to '4294967294' [-Woverflow] WCHDG_CR, WDT_START_MASK, ~WDT_START); include/linux/regmap.h:77:42: note: in definition of macro 'regmap_update_bits' regmap_update_bits_base(map, reg, mask, val, NULL, false, false) ^~~ vim +48 drivers/watchdog/stpmic1_wdt.c 4 5 #include <linux/kernel.h> 6 #include <linux/mfd/stpmic1.h> 7 #include <linux/module.h> 8 #include <linux/platform_device.h> 9 #include <linux/of.h> > 10 #include <linux/regmap.h> 11 #include <linux/slab.h> 12 #include <linux/watchdog.h> 13 14 /* WATCHDOG CONTROL REGISTER bit */ 15 #define WDT_START BIT(0) 16 #define WDT_PING BIT(1) 17 #define WDT_START_MASK BIT(0) 18 #define WDT_PING_MASK BIT(1) 19 20 #define PMIC_WDT_MIN_TIMEOUT 1 21 #define PMIC_WDT_MAX_TIMEOUT 256 22 #define PMIC_WDT_DEFAULT_TIMEOUT 30 23 24 static bool nowayout = WATCHDOG_NOWAYOUT; 25 module_param(nowayout, bool, 0); 26 MODULE_PARM_DESC(nowayout, 27 "Watchdog cannot be stopped once started (default=" 28 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); 29 30 struct stpmic1_wdt { 31 struct stpmic1 *pmic; 32 struct watchdog_device wdtdev; 33 }; 34 35 static int pmic_wdt_start(struct watchdog_device *wdd) 36 { 37 struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd); 38 39 return regmap_update_bits(wdt->pmic->regmap, 40 WCHDG_CR, WDT_START_MASK, WDT_START); 41 } 42 43 static int pmic_wdt_stop(struct watchdog_device *wdd) 44 { 45 struct stpmic1_wdt *wdt = watchdog_get_drvdata(wdd); 46 47 return regmap_update_bits(wdt->pmic->regmap, > 48 WCHDG_CR, WDT_START_MASK, ~WDT_START); 49 } 50 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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