[tip:perf/core] perf tools: Fix inverted error verification bug in thread__fork

[tip-bot for David Ahern]

Commit-ID:  8d00be815c05ed0f0202f606bab4e54f98fd3b30
Gitweb:     http://git.kernel.org/tip/8d00be815c05ed0f0202f606bab4e54f98fd3b30
Author:     David Ahern <dsahern@xxxxxxxxx>
AuthorDate: Tue, 10 Dec 2013 21:35:38 -0700
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 13 Dec 2013 10:30:21 -0300

perf tools: Fix inverted error verification bug in thread__fork

Commit 1902efe7f for the new comm infra added the wrong check for return
code on thread__set_comm. err == 0 is normal, so don't return at that
point unless err != 0.

Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1386736538-23525-1-git-send-email-dsahern@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/thread.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 49eaf1d..e394861 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -126,7 +126,7 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
 		if (!comm)
 			return -ENOMEM;
 		err = thread__set_comm(thread, comm, timestamp);
-		if (!err)
+		if (err)
 			return err;
 		thread->comm_set = true;
 	}
--
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