Merge tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dma

[firefly-linux-kernel-4.4.55.git] / drivers / hwtracing / coresight / coresight.c

diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 894531d315b8312f481a15ce64b17bdebe7ffbb4..e25492137d8bec86a5ff406ff1025724df095fbd 100644 (file)
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -240,6 +240,11 @@ static int coresight_enable_path(struct list_head *path)
        int ret = 0;
        struct coresight_device *cd;
 
+       /*
+        * At this point we have a full @path, from source to sink.  The
+        * sink is the first entry and the source the last one.  Go through
+        * all the components and enable them one by one.
+        */
        list_for_each_entry(cd, path, path_link) {
                if (cd == list_first_entry(path, struct coresight_device,
                                           path_link)) {