[lttng-dev] [PATCH lttng-modules] Fix: use of uninitialized ret value in lttng_abi_open_metadata_stream

[Francis Deslauriers]

Fixes the following compiler warning:

lttng-abi.c: In function ‘lttng_metadata_ioctl’:
lttng-abi.c:971:6: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  int ret;
      ^

Signed-off-by: Francis Deslauriers <francis.deslauriers at efficios.com>
---
 lttng-abi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lttng-abi.c b/lttng-abi.c
index e193f43..478a591 100644
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -998,8 +998,11 @@ int lttng_abi_open_metadata_stream(struct file *channel_file)
 		goto notransport;
 	}
 
-	if (!lttng_kref_get(&session->metadata_cache->refcount))
+	if (!lttng_kref_get(&session->metadata_cache->refcount)) {
+		ret = -EOVERFLOW;
 		goto kref_error;
+	}
+
 	ret = lttng_abi_create_stream_fd(channel_file, stream_priv,
 			&lttng_metadata_ring_buffer_file_operations);
 	if (ret < 0)
-- 
2.7.4