[U-Boot] [PATCH 6/6] common: iotrace: fix behaviour when buffer is full

[Ramon Fried <ramon.fried@gmail.com>]

When the buffer is full, there supposed to be no more
writes, the code however misses the else statement and
subsequently writes to arbitrary pointer location and increases
the offset.
This patch fixes that by returning immediately.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
---
 common/iotrace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/iotrace.c b/common/iotrace.c
index 74408a5dbb..5f06d2b250 100644
--- a/common/iotrace.c
+++ b/common/iotrace.c
@@ -55,6 +55,8 @@ static void add_record(int flags, const void *ptr, ulong value)
 		rec = (struct iotrace_record *)map_sysmem(
 					iotrace.start + iotrace.offset,
 					sizeof(value));
+	} else {
+		return;
 	}
 
 	rec->timestamp = get_ticks();
-- 
2.17.0