Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze

[pandora-kernel.git] / kernel / tracepoint.c

diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 7960274..1ef5d3a 100644 (file)
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -272,12 +272,15 @@ static void disable_tracepoint(struct tracepoint *elem)
  *
  * Updates the probe callback corresponding to a range of tracepoints.
  */
-void tracepoint_update_probe_range(struct tracepoint *begin,
-       struct tracepoint *end)
+void
+tracepoint_update_probe_range(struct tracepoint *begin, struct tracepoint *end)
 {
        struct tracepoint *iter;
        struct tracepoint_entry *mark_entry;
 
+       if (!begin)
+               return;
+
        mutex_lock(&tracepoints_mutex);
        for (iter = begin; iter < end; iter++) {
                mark_entry = get_tracepoint(iter->name);