Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [cannot apply to v5.4-rc1 next-20191002] [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/dt-bindings-watchdog-sam9x60_wdt-add-bindings/20191002-200155 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@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers//watchdog/sam9x60_wdt.c: In function 'sam9x60_wdt_ping': >> drivers//watchdog/sam9x60_wdt.c:23:24: warning: large integer implicitly truncated to unsigned type [-Woverflow] #define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */ ^ >> drivers//watchdog/sam9x60_wdt.c:126:30: note: in expansion of macro 'AT91_WDT_KEY' wdt_write(wdt, AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT); ^~~~~~~~~~~~ vim +/AT91_WDT_KEY +126 drivers//watchdog/sam9x60_wdt.c 20 21 #define AT91_WDT_CR 0x00 /* Watchdog Control Register */ 22 #define AT91_WDT_WDRSTT BIT(0) /* Restart */ > 23 #define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */ 24 25 #define AT91_WDT_MR 0x04 /* Watchdog Mode Register */ 26 #define AT91_WDT_PERIODRST BIT(4) /* Period Reset */ 27 #define AT91_WDT_RPTHRST BIT(5) /* Minimum Restart Period */ 28 #define AT91_WDT_WDDIS BIT(12) /* Disable */ 29 #define AT91_WDT_WDDBGHLT BIT(28) /* Debug Halt */ 30 #define AT91_WDT_WDIDLEHLT BIT(29) /* Idle Halt */ 31 32 #define AT91_WDT_VR 0x08 /* Watchdog Timer Value Register */ 33 34 #define AT91_WDT_WLR 0x0c 35 #define AT91_WDT_COUNTER (0xfff << 0) /* Watchdog Period Value */ 36 #define AT91_WDT_SET_COUNTER(x) ((x) & AT91_WDT_COUNTER) 37 38 #define AT91_WDT_IER 0x14 /* Interrupt Enable Register */ 39 #define AT91_WDT_PERINT BIT(0) /* Period Interrupt Enable */ 40 #define AT91_WDT_IDR 0x18 /* Interrupt Disable Register */ 41 #define AT91_WDT_ISR 0x1c /* Interrupt Status Register */ 42 43 /* minimum and maximum watchdog timeout, in seconds */ 44 #define MIN_WDT_TIMEOUT 1 45 #define MAX_WDT_TIMEOUT 16 46 #define WDT_DEFAULT_TIMEOUT MAX_WDT_TIMEOUT 47 48 #define WDT_SEC2TICKS(s) ((s) ? (((s) << 8) - 1) : 0) 49 50 struct sam9x60_wdt { 51 struct watchdog_device wdd; 52 void __iomem *reg_base; 53 u32 mr; 54 u32 ir; 55 unsigned long last_ping; 56 }; 57 58 static int wdt_timeout; 59 static bool nowayout = WATCHDOG_NOWAYOUT; 60 61 module_param(wdt_timeout, int, 0); 62 MODULE_PARM_DESC(wdt_timeout, 63 "Watchdog timeout in seconds. (default = " 64 __MODULE_STRING(WDT_DEFAULT_TIMEOUT) ")"); 65 66 module_param(nowayout, bool, 0); 67 MODULE_PARM_DESC(nowayout, 68 "Watchdog cannot be stopped once started (default=" 69 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); 70 71 #define wdt_enabled (!(wdt->mr & AT91_WDT_WDDIS)) 72 73 #define wdt_read(wdt, field) \ 74 readl_relaxed((wdt)->reg_base + (field)) 75 76 /* 4 slow clock periods is 4/32768 = 122.07us*/ 77 #define WDT_DELAY usecs_to_jiffies(123) 78 79 static void wdt_write(struct sam9x60_wdt *wdt, u32 field, u32 val) 80 { 81 /* 82 * WDT_CR and WDT_MR must not be modified within three slow clock 83 * periods following a restart of the watchdog performed by a write 84 * access in WDT_CR. 85 */ 86 while (time_before(jiffies, wdt->last_ping + WDT_DELAY)) 87 usleep_range(30, 125); 88 writel_relaxed(val, wdt->reg_base + field); 89 wdt->last_ping = jiffies; 90 } 91 92 static void wdt_write_nosleep(struct sam9x60_wdt *wdt, u32 field, u32 val) 93 { 94 if (time_before(jiffies, wdt->last_ping + WDT_DELAY)) 95 usleep_range(123, 250); 96 writel_relaxed(val, wdt->reg_base + field); 97 wdt->last_ping = jiffies; 98 } 99 100 static int sam9x60_wdt_start(struct watchdog_device *wdd) 101 { 102 struct sam9x60_wdt *wdt = watchdog_get_drvdata(wdd); 103 104 wdt->mr &= ~AT91_WDT_WDDIS; 105 wdt_write(wdt, AT91_WDT_MR, wdt->mr); 106 wdt_write_nosleep(wdt, AT91_WDT_IER, wdt->ir); 107 108 return 0; 109 } 110 111 static int sam9x60_wdt_stop(struct watchdog_device *wdd) 112 { 113 struct sam9x60_wdt *wdt = watchdog_get_drvdata(wdd); 114 115 wdt->mr |= AT91_WDT_WDDIS; 116 wdt_write(wdt, AT91_WDT_MR, wdt->mr); 117 wdt_write_nosleep(wdt, AT91_WDT_IDR, wdt->ir); 118 119 return 0; 120 } 121 122 static int sam9x60_wdt_ping(struct watchdog_device *wdd) 123 { 124 struct sam9x60_wdt *wdt = watchdog_get_drvdata(wdd); 125 > 126 wdt_write(wdt, AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT); 127 128 return 0; 129 } 130 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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