Hi Nicolas, [auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
config: x86_64-allmodconfig (attached as .config)
reproduce:
git checkout c2df3a7df512b1d640247d7c9b7542217bfb9ab1
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
drivers/power/reset/at91-shdwc.c: In function 'at91_poweroff':
>> drivers/power/reset/at91-shdwc.c:32:24: warning: large integer implicitly
>> truncated to unsigned type [-Woverflow]
#define AT91_SHDW_KEY (0xa5 << 24) /* KEY Password */
^
>> drivers/power/reset/at91-shdwc.c:107:9: note: in expansion of macro
>> 'AT91_SHDW_KEY'
writel(AT91_SHDW_KEY | AT91_SHDW_SHDW,
^
vim +32 drivers/power/reset/at91-shdwc.c
26 #include <linux/printk.h>
27
28 #define SLOW_CLOCK_FREQ 32768
29
30 #define AT91_SHDW_CR 0x00 /* Shut Down Control Register */
31 #define AT91_SHDW_SHDW BIT(0) /* Shut Down
command */
> 32 #define AT91_SHDW_KEY (0xa5 << 24) /* KEY Password
*/
33
34 #define AT91_SHDW_MR 0x04 /* Shut Down Mode Register */
35 #define AT91_SHDW_WKUPDBC_SHIFT 24
36 #define AT91_SHDW_WKUPDBC_MASK GENMASK(31, 16)
37 #define AT91_SHDW_WKUPDBC(x) (((x) << AT91_SHDW_WKUPDBC_SHIFT) \
38 &
AT91_SHDW_WKUPDBC_MASK)
39
40 #define AT91_SHDW_SR 0x08 /* Shut Down Status Register */
41 #define AT91_SHDW_WKUPIS_SHIFT 16
42 #define AT91_SHDW_WKUPIS_MASK GENMASK(31, 16)
43 #define AT91_SHDW_WKUPIS(x) ((1 << (x)) << AT91_SHDW_WKUPIS_SHIFT \
44 & AT91_SHDW_WKUPIS_MASK)
45
46 #define AT91_SHDW_WUIR 0x0c /* Shutdown Wake-up Inputs
Register */
47 #define AT91_SHDW_WKUPEN_MASK GENMASK(15, 0)
48 #define AT91_SHDW_WKUPEN(x) ((1 << (x)) & AT91_SHDW_WKUPEN_MASK)
49 #define AT91_SHDW_WKUPT_SHIFT 16
50 #define AT91_SHDW_WKUPT_MASK GENMASK(31, 16)
51 #define AT91_SHDW_WKUPT(x) ((1 << (x)) << AT91_SHDW_WKUPT_SHIFT \
52 & AT91_SHDW_WKUPT_MASK)
53
54 #define SHDW_WK_PIN(reg, cfg) ((reg) &
AT91_SHDW_WKUPIS((cfg)->wkup_pin_input))
55 #define SHDW_RTCWK(reg, cfg) (((reg) >> ((cfg)->sr_rtcwk_shift)) &
0x1)
56 #define SHDW_RTCWKEN(cfg) (1 << ((cfg)->mr_rtcwk_shift))
57
58 #define DBC_PERIOD_US(x) DIV_ROUND_UP_ULL((1000000 * (x)), \
59 SLOW_CLOCK_FREQ)
60
61 struct shdwc_config {
62 u8 wkup_pin_input;
63 u8 mr_rtcwk_shift;
64 u8 sr_rtcwk_shift;
65 };
66
67 struct shdwc {
68 struct shdwc_config *cfg;
69 void __iomem *at91_shdwc_base;
70 };
71
72 /*
73 * Hold configuration here, cannot be more than one instance of the
driver
74 * since pm_power_off itself is global.
75 */
76 static struct shdwc *at91_shdwc;
77 static struct clk *sclk;
78
79 static const unsigned long long sdwc_dbc_period[] = {
80 0, 3, 32, 512, 4096, 32768,
81 };
82
83 static void __init at91_wakeup_status(struct platform_device *pdev)
84 {
85 struct shdwc *shdw = platform_get_drvdata(pdev);
86 u32 reg;
87 char *reason = "unknown";
88
89 reg = readl(shdw->at91_shdwc_base + AT91_SHDW_SR);
90
91 dev_dbg(&pdev->dev, "%s: status = %#x\n", __func__, reg);
92
93 /* Simple power-on, just bail out */
94 if (!reg)
95 return;
96
97 if (SHDW_WK_PIN(reg, shdw->cfg))
98 reason = "WKUP pin";
99 else if (SHDW_RTCWK(reg, shdw->cfg))
100 reason = "RTC";
101
102 pr_info("AT91: Wake-Up source: %s\n", reason);
103 }
104
105 static void at91_poweroff(void)
106 {
> 107 writel(AT91_SHDW_KEY | AT91_SHDW_SHDW,
108 at91_shdwc->at91_shdwc_base + AT91_SHDW_CR);
109 }
110
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0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: Binary data
