bin2bcd(tm->tm_mday) | (buf[M41T80_REG_DAY] & ~0x3f);
buf[M41T80_REG_MON] =
bin2bcd(tm->tm_mon + 1) | (buf[M41T80_REG_MON] & ~0x1f);
+
/* assume 20YY not 19YY */
+ if (tm->tm_year < 100 || tm->tm_year > 199) {
+ dev_err(&client->dev, "Year must be between 2000 and 2099. It's %d.\n",
+ tm->tm_year + 1900);
+ return -EINVAL;
+ }
buf[M41T80_REG_YEAR] = bin2bcd(tm->tm_year % 100);
if (i2c_transfer(client->adapter, msgs, 1) != 1) {