linux-kernel - [PATCH] tracing/boot: Fix an IS

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Date:   Fri, 17 Jan 2020 08:30:07 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] tracing/boot: Fix an IS_ERR() vs NULL bug

The trace_array_get_by_name() function doesn't return error pointers,
it returns NULL on error.

Fixes: 4f712a4d04a4 ("tracing/boot: Add instance node support")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 kernel/trace/trace_boot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index fa9603dc6469..cd541ac1cbc1 100644
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -322,7 +322,7 @@ trace_boot_init_instances(struct xbc_node *node)
 			continue;
 
 		tr = trace_array_get_by_name(p);
-		if (IS_ERR(tr)) {
+		if (!tr) {
 			pr_err("Failed to get trace instance %s\n", p);
 			continue;
 		}
-- 
2.11.0