diff options
| -rw-r--r-- | drivers/rtc/rtc-nuc900.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c index a351bd5d817..21d13309fb2 100644 --- a/drivers/rtc/rtc-nuc900.c +++ b/drivers/rtc/rtc-nuc900.c @@ -85,22 +85,21 @@ static irqreturn_t nuc900_rtc_interrupt(int irq, void *_rtc) static int *check_rtc_access_enable(struct nuc900_rtc *nuc900_rtc) { - unsigned int i; + unsigned int i, timeout = 0x1000; __raw_writel(INIRRESET, nuc900_rtc->rtc_reg + REG_RTC_INIR); mdelay(10); __raw_writel(AERPOWERON, nuc900_rtc->rtc_reg + REG_RTC_AER); - for (i = 0; i < 1000; i++) { - if (__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB) - return 0; - } + while (!(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB) + && timeout--) + mdelay(1); - if ((__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB) == 0x0) - return ERR_PTR(-ENODEV); + if (!timeout) + return ERR_PTR(-EPERM); - return ERR_PTR(-EPERM); + return 0; } static void nuc900_rtc_bcd2bin(unsigned int timereg, |