TEGRA_RTC_REG_INTR_STATUS
value = readl(info->base + TEGRA_RTC_REG_INTR_STATUS);
status = readl(info->base + TEGRA_RTC_REG_INTR_STATUS);
writel(status, info->base + TEGRA_RTC_REG_INTR_STATUS);
writel(0xffffffff, info->base + TEGRA_RTC_REG_INTR_STATUS);
writel(0xffffffff, info->base + TEGRA_RTC_REG_INTR_STATUS);