drivers/rtc/mxc: Update driver to address y2038/y2106 issues

This driver has a number of y2038/y2106 issues.

This patch resolves them by:

  - Replacing rtc_time_to_tm() with rtc_time64_to_tm()
  - Replacing rtc_tm_to_time() with rtc_tm_to_time64()
  - Changing mxc_rtc_set_mmss() to use rtc_class_ops's set_mmss64()

After this patch, the driver should not have any remaining
y2038/y2106 issues.

Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1427945681-29972-14-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 83cba23..09d422b 100644 (file)
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -286,7 +286,7 @@ static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm)
 /*
  * This function sets the internal RTC time based on tm in Gregorian date.
  */
-static int mxc_rtc_set_mmss(struct device *dev, unsigned long time)
+static int mxc_rtc_set_mmss(struct device *dev, time64_t time)
 {
        struct platform_device *pdev = to_platform_device(dev);
        struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
@@ -297,9 +297,9 @@ static int mxc_rtc_set_mmss(struct device *dev, unsigned long time)
        if (is_imx1_rtc(pdata)) {
                struct rtc_time tm;
 
-               rtc_time_to_tm(time, &tm);
+               rtc_time64_to_tm(time, &tm);
                tm.tm_year = 70;
-               rtc_tm_to_time(&tm, &time);
+               time = rtc_tm_to_time64(&tm);
        }
 
        /* Avoid roll-over from reading the different registers */
@@ -347,7 +347,7 @@ static int mxc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 static struct rtc_class_ops mxc_rtc_ops = {
        .release                = mxc_rtc_release,
        .read_time              = mxc_rtc_read_time,
-       .set_mmss               = mxc_rtc_set_mmss,
+       .set_mmss64             = mxc_rtc_set_mmss,
        .read_alarm             = mxc_rtc_read_alarm,
        .set_alarm              = mxc_rtc_set_alarm,
        .alarm_irq_enable       = mxc_rtc_alarm_irq_enable,