Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.

Change generated with coccinelle.

To: Steven Rostedt <[email protected]>
To: Masami Hiramatsu <[email protected]>
To: Mathieu Desnoyers <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Philipp Hahn <[email protected]>
---
 kernel/trace/fprobe.c                | 2 +-
 kernel/trace/kprobe_event_gen_test.c | 2 +-
 kernel/trace/trace_events_hist.c     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/fprobe.c b/kernel/trace/fprobe.c
index 
dcadf1d23b8a31f571392d0c49cbd22df1716b4f..a94ce810d83b90f55d1178a9bd29c78fd068df4c
 100644
--- a/kernel/trace/fprobe.c
+++ b/kernel/trace/fprobe.c
@@ -607,7 +607,7 @@ static int fprobe_module_callback(struct notifier_block *nb,
        do {
                rhashtable_walk_start(&iter);
 
-               while ((node = rhashtable_walk_next(&iter)) && !IS_ERR(node))
+               while (!IS_ERR_OR_NULL((node = rhashtable_walk_next(&iter))))
                        fprobe_remove_node_in_module(mod, node, &alist);
 
                rhashtable_walk_stop(&iter);
diff --git a/kernel/trace/kprobe_event_gen_test.c 
b/kernel/trace/kprobe_event_gen_test.c
index 
5a4b722b50451bfdee42769a6d3be39c055690d1..a1735ca273f0b756aa1fcfcdab30ddad9bc51c5f
 100644
--- a/kernel/trace/kprobe_event_gen_test.c
+++ b/kernel/trace/kprobe_event_gen_test.c
@@ -75,7 +75,7 @@ static struct trace_event_file *gen_kretprobe_test;
 
 static bool trace_event_file_is_valid(struct trace_event_file *input)
 {
-       return input && !IS_ERR(input);
+       return !IS_ERR_OR_NULL(input);
 }
 
 /*
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 
73ea180cad555898693e92ee397a1c9493c7c167..59df215e1dfd9349eca1c0823ed709ec7285f766
 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -3973,7 +3973,7 @@ trace_action_create_field_var(struct hist_trigger_data 
*hist_data,
         */
        field_var = create_target_field_var(hist_data, system, event, var);
 
-       if (field_var && !IS_ERR(field_var)) {
+       if (!IS_ERR_OR_NULL(field_var)) {
                save_field_var(hist_data, field_var);
                hist_field = field_var->var;
        } else {

-- 
2.43.0


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