drivers/rtc/rtc-hym8563.c: set uie_unsupported
authorHeiko Stuebner <heiko@sntech.de>
Fri, 9 May 2014 22:36:57 +0000 (15:36 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sun, 11 May 2014 08:55:48 +0000 (17:55 +0900)
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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/rtc/rtc-hym8563.c

index bd628a6..e5f13c4 100644 (file)
@@ -569,6 +569,9 @@ static int hym8563_probe(struct i2c_client *client,
        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