[PATCH 4.9 138/240] perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars

[Greg Kroah-Hartman]

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

[ Upstream commit 210e4c89ef61432040c6cd828fefa441f4887186 ]

The 'ret' variable was initialized to zero but then it was not updated
from the fprintf() return, fix it.

Reported-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>
cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
cc: Ingo Molnar <mingo@xxxxxxxxxx>
cc: Jiri Olsa <jolsa@xxxxxxxxxx>
cc: Mark Rutland <mark.rutland@xxxxxxx>
cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Fixes: 90f18e63fbd00513 ("perf symbols: List symbols in a dso in ascending name order")
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 tools/perf/util/symbol_fprintf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol_fprintf.c b/tools/perf/util/symbol_fprintf.c
index a680bdaa65dc..060957aeb79a 100644
--- a/tools/perf/util/symbol_fprintf.c
+++ b/tools/perf/util/symbol_fprintf.c
@@ -64,7 +64,7 @@ size_t dso__fprintf_symbols_by_name(struct dso *dso,
 
 	for (nd = rb_first(&dso->symbol_names[type]); nd; nd = rb_next(nd)) {
 		pos = rb_entry(nd, struct symbol_name_rb_node, rb_node);
-		fprintf(fp, "%s\n", pos->sym.name);
+		ret += fprintf(fp, "%s\n", pos->sym.name);
 	}
 
 	return ret;
-- 
2.30.2