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cbsp_link: Log unexpected return error codes

This easies spotting the cause of close/destroy code paths.

Change-Id: Ibfd9a33798ba88e2332c00ed90709e38bb2222d7
---
M src/cbsp_link.c
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-cbc refs/changes/77/38977/1

diff --git a/src/cbsp_link.c b/src/cbsp_link.c
index 2c31455..07fbadd 100644
--- a/src/cbsp_link.c
+++ b/src/cbsp_link.c
@@ -121,6 +121,7 @@
 	/* message de-segmentation */
 	rc = osmo_cbsp_recv_buffered(conn, ofd->fd, &msg, &link->rx_msg);
 	if (rc <= 0) {
+		LOGPCC(link, LOGL_NOTICE, "osmo_cbsp_recv_buffered() ret %d\n", rc);
 		if (rc == -EAGAIN || rc == -EINTR) {
 			/* more data needs to be read */
 			return 0;
@@ -205,6 +206,7 @@
 	/* message de-segmentation */
 	rc = osmo_cbsp_recv_buffered(conn, ofd->fd, &msg, &link->rx_msg);
 	if (rc <= 0) {
+		LOGPCC(link, LOGL_NOTICE, "osmo_cbsp_recv_buffered() ret %d\n", rc);
 		if (rc == -EAGAIN || rc == -EINTR) {
 			/* more data needs to be read */
 			return 0;

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