[PATCH] tracing: probes: remove unused variable

[Martin Kaiser]

params is always NULL in traceprobe_expand_meta_args, it can be removed.

Signed-off-by: Martin Kaiser <martin@xxxxxxxxx>
---
Would it be better to return ERR_PTR(-EOPNOTSUPP) instead of NULL, similar to
what is done in other places where NOSUP_BTFARG is logged? This would make the
parsing fail if $arg* is used without BTF support. At the moment, we skip the
$arg*...

 kernel/trace/trace_probe.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index e0d3a0da26af..b627093a941e 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1729,7 +1729,6 @@ const char **traceprobe_expand_meta_args(int argc, const char *argv[],
 					 int *new_argc, char *buf, int bufsize,
 					 struct traceprobe_parse_context *ctx)
 {
-	const struct btf_param *params = NULL;
 	int i, j, n, used, ret, args_idx = -1;
 	const char **new_argv __free(kfree) = NULL;
 
@@ -1747,7 +1746,7 @@ const char **traceprobe_expand_meta_args(int argc, const char *argv[],
 		if (args_idx != -1) {
 			/* $arg* requires BTF info */
 			trace_probe_log_err(0, NOSUP_BTFARG);
-			return (const char **)params;
+			return NULL;
 		}
 		*new_argc = argc;
 		return NULL;
-- 
2.43.7