X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_backend.c;h=9d199e516aacbaf009538faf394671113e18bf70;hb=9837fedce98e9cf83b1ffc0ec8ecd90d7c070c07;hp=54c62a996764ee2ee004ee96f3a188801ae6d871;hpb=1e7d7200c65e334e883b6411de226e2772998923;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_backend.c b/lib/ringbuffer/ring_buffer_backend.c
index 54c62a99..9d199e51 100644
--- a/lib/ringbuffer/ring_buffer_backend.c
+++ b/lib/ringbuffer/ring_buffer_backend.c
@@ -455,9 +455,11 @@ int channel_backend_init(struct channel_backend *chanb,
 free_bufs:
 	if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
-		ret = cpuhp_state_remove_instance(lttng_rb_hp_prepare,
-				&chanb->cpuhp_prepare.node);
-		WARN_ON(ret);
+		/*
+		 * Teardown of lttng_rb_hp_prepare instance
+		 * on "add" error is handled within cpu hotplug,
+		 * no teardown to do from the caller.
+		 */
 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
 #ifdef CONFIG_HOTPLUG_CPU
 		put_online_cpus();