Merge branch 'next-merged' of git://aeryn.fluff.org.uk/bjdooks/linux into devel

[linux-2.6] / drivers / rtc / rtc-sysfs.c

diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 4d27ccc..2531ce4 100644 (file)
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -145,6 +145,8 @@ rtc_sysfs_set_wakealarm(struct device *dev, struct device_attribute *attr,
        unsigned long now, alarm;
        struct rtc_wkalrm alm;
        struct rtc_device *rtc = to_rtc_device(dev);
+       char *buf_ptr;
+       int adjust = 0;
 
        /* Only request alarms that trigger in the future.  Disable them
         * by writing another time, e.g. 0 meaning Jan 1 1970 UTC.
@@ -154,7 +156,15 @@ rtc_sysfs_set_wakealarm(struct device *dev, struct device_attribute *attr,
                return retval;
        rtc_tm_to_time(&alm.time, &now);
 
-       alarm = simple_strtoul(buf, NULL, 0);
+       buf_ptr = (char *)buf;
+       if (*buf_ptr == '+') {
+               buf_ptr++;
+               adjust = 1;
+       }
+       alarm = simple_strtoul(buf_ptr, NULL, 0);
+       if (adjust) {
+               alarm += now;
+       }
        if (alarm > now) {
                /* Avoid accidentally clobbering active alarms; we can't
                 * entirely prevent that here, without even the minimal