tracing: Fix NULL vs IS_ERR() check in enable_instances()

The trace_array_create_systems() function returns error pointers, not
NULL.  Fix the check to match.

Cc: Masami Hiramatsu <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 71cca10581d6cd8a92192d23805a964804d28c24..5462fb10ff64b154d9afb43a1551fcf53a445867 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -10507,7 +10507,7 @@ __init static void enable_instances(void)
                }
 
                tr = trace_array_create_systems(name, NULL, addr, size);
-               if (!tr) {
+               if (IS_ERR(tr)) {
                        pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str);
                        continue;
                }