From 1707576155daf644c5df3c1776b52fd297ff9318 Mon Sep 17 00:00:00 2001 From: Paul Fox Date: Fri, 30 Mar 2012 08:16:50 -0400 Subject: [PATCH] rtcwake: only invoke RTC_AIE_ON/OFF ioctls in pairs many rtc drivers don't implement the RTC_AIE_ON/OFF ioctls at all -- so if we never tried to enable the alarm interrupt, don't try to disable it later. Signed-off-by: Paul Fox --- sys-utils/rtcwake.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sys-utils/rtcwake.c b/sys-utils/rtcwake.c index 4aa5057fe6..57e4e8b344 100644 --- a/sys-utils/rtcwake.c +++ b/sys-utils/rtcwake.c @@ -63,6 +63,7 @@ enum ClockMode { static unsigned verbose; static unsigned dryrun; +static unsigned ioctl_aie_on; // ioctl(AIE_ON) succeeded enum ClockMode clock_mode = CM_AUTO; static struct option long_options[] = { @@ -241,6 +242,7 @@ static int setup_alarm(int fd, time_t *wakeup) warn(_("enable rtc alarm failed")); return -1; } + ioctl_aie_on = 1; } else { warn(_("set rtc wake alarm failed")); return -1; @@ -613,7 +615,8 @@ int main(int argc, char **argv) suspend_system(suspend); } - if (!dryrun && ioctl(fd, RTC_AIE_OFF, 0) < 0) + if (!dryrun && ioctl_aie_on && ioctl(fd, RTC_AIE_OFF, 0) < 0) + warn(_("disable rtc alarm interrupt failed")); close(fd); -- 2.47.3