From: Mathieu Poirier Date: Wed, 7 Oct 2015 15:26:40 +0000 (-0600) Subject: coresight: adding comments to remove ambiguity X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=58b8d51b841eff6473df4d25959a2ec335b7cb85;p=deliverable%2Flinux.git coresight: adding comments to remove ambiguity Add comment to function coresight_enable_path() to make sure there is no misunderstanding about what the code does. Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 894531d315b8..e25492137d8b 100644 --- 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)) {