Subject: Re: linux-next: build failure after merge of the input tree

From: John Stultz <[email-masked]>
Date: Tue, 24 Jan 2012 15:16:32 -0800

On Tue, 2012-01-24 at 14:25 +1100, Stephen Rothwell wrote:
> Hi Dmitry,
> 
> After merging the input tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> ERROR: ".ktime_get_monotonic_offset" [drivers/input/evdev.ko] undefined!
> 
> Caused by commit 04f2c50e5fd8 ("Input: add infrastructure for selecting
> clockid for event time stamps").
> 
> I have used the input tree from next-20120123 for today.

Huh.

ktime_get_monotonic_offset is a timekeeping core interface, defined
along with ktime_get 

Hrmmm.. Ah. I suspect this will fix it:

Export ktime_get_monotonic_offset for evdev

Signed-off-by: John Stultz <[email-masked]>

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 9cf6bbb..9781add 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1230,6 +1230,8 @@ ktime_t ktime_get_monotonic_offset(void)
 	} while (read_seqretry(&xtime_lock, seq));
 	return timespec_to_ktime(wtom);
 }
+EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset);
+
 
 /**
  * xtime_update() - advances the timekeeping infrastructure