From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/rtc/rtc-ds1553.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/rtc/rtc-ds1553.c~rtc-add-a-comment-for-enoioctlcmd-in-ds1553_rtc_ioctl drivers/rtc/rtc-ds1553.c
--- a/drivers/rtc/rtc-ds1553.c~rtc-add-a-comment-for-enoioctlcmd-in-ds1553_rtc_ioctl
+++ a/drivers/rtc/rtc-ds1553.c
@@ -226,7 +226,7 @@ static int ds1553_rtc_ioctl(struct devic
 	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
 
 	if (pdata->irq < 0)
-		return -ENOIOCTLCMD;
+		return -ENOIOCTLCMD; /* fall back into rtc-dev's emulation */
 	switch (cmd) {
 	case RTC_AIE_OFF:
 		pdata->irqen &= ~RTC_AF;
_