Variable event_var is set to 'ERR_PTR(-EINVAL)', but this value
is never read as it is overwritten or not used later on, hence
it is a redundant assignment and can be removed.
Clean up the following clang-analyzer warning:
kernel/trace/trace_events_hist.c:2437:21: warning: Value stored to
'event_var' during its initialization is never read
[clang-analyzer-deadcode.DeadStores].
Reported-by: Abaci Robot <[email protected]>
Signed-off-by: Jiapeng Chong <[email protected]>
---
Changes in v2:
-Move the declaration of event_var below key_field, as their names
are both the same size in length and are of the same type. This
keeps the "upside-down x-mas tree" look of the declarations. For
the follow advice: https://lore.kernel.org/patchwork/patch/1422518/
kernel/trace/trace_events_hist.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index c1abd63..dacd6fe 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2434,12 +2434,12 @@ static struct trace_event_file *event_file(struct trace_array *tr,
char *subsys_name, char *event_name, char *field_name)
{
struct trace_array *tr = target_hist_data->event_file->tr;
- struct hist_field *event_var = ERR_PTR(-EINVAL);
struct hist_trigger_data *hist_data;
unsigned int i, n, first = true;
struct field_var_hist *var_hist;
struct trace_event_file *file;
struct hist_field *key_field;
+ struct hist_field *event_var;
char *saved_filter;
char *cmd;
int ret;
--
1.8.3.1