Fix the checking of the range for the year when
setting time with the S3C24XX RTC driver
Signed-off-by: Ben Dooks <[email protected]>
diff -urpN -X ../dontdiff linux-2.6.18-rc4-all1/drivers/rtc/rtc-s3c.c linux-2.6.18-rc4-all2/drivers/rtc/rtc-s3c.c
--- linux-2.6.18-rc4-all1/drivers/rtc/rtc-s3c.c 2006-08-14 09:04:57.000000000 +0100
+++ linux-2.6.18-rc4-all2/drivers/rtc/rtc-s3c.c 2006-08-14 09:59:47.000000000 +0100
@@ -11,6 +11,8 @@
* S3C2410/S3C2440/S3C24XX Internal RTC Driver
*/
+//B#define DEBUG
+
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/string.h>
@@ -153,24 +155,25 @@ static int s3c_rtc_gettime(struct device
static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
{
void __iomem *base = s3c_rtc_base;
+ int year = tm->tm_year - 100;
+
+ 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);
- /* the rtc gets round the y2k problem by just not supporting it */
+ /* 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;
}
-
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