ring-buffer: Fix return value check in test_ringbuffer()

[mirror_ubuntu-zesty-kernel.git] / kernel / trace / ring_buffer.c

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index a85739efcc304b30b3f2e08fc51aff5e84200628..8df48ccb8af661d4dbc510cf942a322824b52dac 100644 (file)
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -4825,9 +4825,9 @@ static __init int test_ringbuffer(void)
                rb_data[cpu].cnt = cpu;
                rb_threads[cpu] = kthread_create(rb_test, &rb_data[cpu],
                                                 "rbtester/%d", cpu);
-               if (WARN_ON(!rb_threads[cpu])) {
+               if (WARN_ON(IS_ERR(rb_threads[cpu]))) {
                        pr_cont("FAILED\n");
-                       ret = -1;
+                       ret = PTR_ERR(rb_threads[cpu]);
                        goto out_free;
                }
 
@@ -4837,9 +4837,9 @@ static __init int test_ringbuffer(void)
 
        /* Now create the rb hammer! */
        rb_hammer = kthread_run(rb_hammer_test, NULL, "rbhammer");
-       if (WARN_ON(!rb_hammer)) {
+       if (WARN_ON(IS_ERR(rb_hammer))) {
                pr_cont("FAILED\n");
-               ret = -1;
+               ret = PTR_ERR(rb_hammer);
                goto out_free;
        }