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authorMagnus Damm <damm@igel.co.jp>2009-03-19 10:10:44 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-03-20 18:57:30 +0900
commitedf22477dab5ff3be612af56ee4300ca63e11d06 (patch)
treed22c64a0478f9f304b720f8be74245edad1bee55 /drivers/rtc/rtc-sh.c
parent9cd88b90a6008b0d744187fab80ade4c81c6536f (diff)
downloadlinux-edf22477dab5ff3be612af56ee4300ca63e11d06.tar.bz2
sh: sh-rtc invalid time rework
This patch modifies invalid time handling in the SuperH RTC driver. Instead of zeroing the returned value at read-out time we just return an error code and reset invalid values during probe. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/rtc/rtc-sh.c')
-rw-r--r--drivers/rtc/rtc-sh.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 21e7435daecb..9ab660c28fee 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -431,12 +431,7 @@ static int sh_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec, tm->tm_min, tm->tm_hour,
tm->tm_mday, tm->tm_mon + 1, tm->tm_year, tm->tm_wday);
- if (rtc_valid_tm(tm) < 0) {
- dev_err(dev, "invalid date\n");
- rtc_time_to_tm(0, tm);
- }
-
- return 0;
+ return rtc_valid_tm(tm);
}
static int sh_rtc_set_time(struct device *dev, struct rtc_time *tm)
@@ -641,6 +636,7 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
{
struct sh_rtc *rtc;
struct resource *res;
+ struct rtc_time r;
int ret;
rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL);
@@ -752,6 +748,13 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
sh_rtc_setpie(&pdev->dev, 0);
sh_rtc_setaie(&pdev->dev, 0);
sh_rtc_setcie(&pdev->dev, 0);
+
+ /* reset rtc to epoch 0 if time is invalid */
+ if (rtc_read_time(rtc->rtc_dev, &r) < 0) {
+ rtc_time_to_tm(0, &r);
+ rtc_set_time(rtc->rtc_dev, &r);
+ }
+
return 0;
err_unmap: