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

[Greg Kroah-Hartman]

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Heiko Stuebner <heiko@xxxxxxxxx>

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@xxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 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


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