Add cmpxchg_local to m86k

[linux-2.6-omap-h63xx.git] / drivers / rtc / rtc-dev.c

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 025c60a17a4a3c9841d4105bf0344a92f9c31510..90dfa0df747acb9314b4ed115c2eec0dee1eae0d 100644 (file)
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -246,6 +246,15 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
        /* if the driver does not provide the ioctl interface
         * or if that particular ioctl was not implemented
         * (-ENOIOCTLCMD), we will try to emulate here.
+        *
+        * Drivers *SHOULD NOT* provide ioctl implementations
+        * for these requests.  Instead, provide methods to
+        * support the following code, so that the RTC's main
+        * features are accessible without using ioctls.
+        *
+        * RTC and alarm times will be in UTC, by preference,
+        * but dual-booting with MS-Windows implies RTCs must
+        * use the local wall clock time.
         */
 
        switch (cmd) {