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authorBen Dooks <ben-linux@fluff.org>2006-08-27 01:23:27 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-08-27 11:01:28 -0700
commit641741e010b615bae417c876a21d17dbd616241f (patch)
tree236c363b0b4924052c0fd4045e68b54c0e7a79a1 /drivers/rtc
parentb6b5bce3571e496504a89ee575d32101e0a98b93 (diff)
downloadlinux-641741e010b615bae417c876a21d17dbd616241f.tar.bz2
[PATCH] rtc-s3c.c: fix time setting checks
Fix the year check on setting the time with the S3C24XX RTC driver. Also move the debug to before the set to see what is going on if it does fail. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-s3c.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index aacbfea98678..2c7de79c83b9 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -153,24 +153,25 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
{
void __iomem *base = s3c_rtc_base;
+ int year = tm->tm_year - 100;
- /* the rtc gets round the y2k problem by just not supporting it */
+ pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
+ tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ /* we get around y2k by simply not supporting it */
- if (tm->tm_year > 100) {
+ if (year < 0 || year >= 100) {
dev_err(dev, "rtc only supports 100 years\n");
return -EINVAL;
}
- pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
- tm->tm_year, tm->tm_mon, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
writeb(BIN2BCD(tm->tm_sec), base + S3C2410_RTCSEC);
writeb(BIN2BCD(tm->tm_min), base + S3C2410_RTCMIN);
writeb(BIN2BCD(tm->tm_hour), base + S3C2410_RTCHOUR);
writeb(BIN2BCD(tm->tm_mday), base + S3C2410_RTCDATE);
writeb(BIN2BCD(tm->tm_mon + 1), base + S3C2410_RTCMON);
- writeb(BIN2BCD(tm->tm_year - 100), base + S3C2410_RTCYEAR);
+ writeb(BIN2BCD(year), base + S3C2410_RTCYEAR);
return 0;
}