diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-at91sam9.c | 2 | ||||
| -rw-r--r-- | drivers/rtc/rtc-isl12057.c | 5 | ||||
| -rw-r--r-- | drivers/rtc/rtc-mv.c | 12 | ||||
| -rw-r--r-- | drivers/rtc/rtc-pxa.c | 1 |
4 files changed, 14 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index 309b8b342d9c..596374304532 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -24,7 +24,7 @@ #include <mach/at91_rtt.h> #include <mach/cpu.h> - +#include <mach/hardware.h> /* * This driver uses two configurable hardware resources that live in the diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c index 7e5ead936a04..41bd76aaff76 100644 --- a/drivers/rtc/rtc-isl12057.c +++ b/drivers/rtc/rtc-isl12057.c @@ -274,10 +274,7 @@ static int isl12057_probe(struct i2c_client *client, dev_set_drvdata(dev, data); rtc = devm_rtc_device_register(dev, DRV_NAME, &rtc_ops, THIS_MODULE); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); - - return 0; + return PTR_ERR_OR_ZERO(rtc); } #ifdef CONFIG_OF diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index d536c5962c99..d15a999363fc 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -222,6 +222,7 @@ static int __init mv_rtc_probe(struct platform_device *pdev) struct resource *res; struct rtc_plat_data *pdata; u32 rtc_time; + u32 rtc_date; int ret = 0; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); @@ -257,6 +258,17 @@ static int __init mv_rtc_probe(struct platform_device *pdev) } } + /* + * A date after January 19th, 2038 does not fit on 32 bits and + * will confuse the kernel and userspace. Reset to a sane date + * (January 1st, 2013) if we're after 2038. + */ + rtc_date = readl(pdata->ioaddr + RTC_DATE_REG_OFFS); + if (bcd2bin((rtc_date >> RTC_YEAR_OFFS) & 0xff) >= 38) { + dev_info(&pdev->dev, "invalid RTC date, resetting to January 1st, 2013\n"); + writel(0x130101, pdata->ioaddr + RTC_DATE_REG_OFFS); + } + pdata->irq = platform_get_irq(pdev, 0); platform_set_drvdata(pdev, pdata); diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c index a355f2b82bb8..cccbf9d89729 100644 --- a/drivers/rtc/rtc-pxa.c +++ b/drivers/rtc/rtc-pxa.c @@ -32,7 +32,6 @@ #include <mach/hardware.h> -#define TIMER_FREQ CLOCK_TICK_RATE #define RTC_DEF_DIVIDER (32768 - 1) #define RTC_DEF_TRIM 0 #define MAXFREQ_PERIODIC 1000 |
