[PATCH 3.14 038/228] drivers/rtc/rtc-hym8563.c: set uie_unsupported

Greg Kroah-Hartman
2014-06-05T00:43:04Z

From: Heiko Stuebner <heiko@sntech.de>

commit 282cba6b00a95f0277ed71551e3f6b0477e8836b upstream.

The alarm of the hym8563 only supports a minute accuracy, while the uie
wants an alarm one second in the future. Therefore things like the
select() syscall will fail with a timeout, because the next alarm will
happen in a worst case of 60 seconds.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/rtc/rtc-hym8563.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -569,6 +569,9 @@ static int hym8563_probe(struct i2c_clie
if (IS_ERR(hym8563->rtc))
return PTR_ERR(hym8563->rtc);

+ /* the hym8563 alarm only supports a minute accuracy */
+ hym8563->rtc->uie_unsupported = 1;
+
#ifdef CONFIG_COMMON_CLK
hym8563_clkout_register_clk(hym8563);
#endif