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,