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authorMathieu Poirier <mathieu.poirier@linaro.org>2015-10-07 09:26:40 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-10-07 17:54:09 +0100
commit58b8d51b841eff6473df4d25959a2ec335b7cb85 (patch)
tree781b214ec054823bf3c26b0783ce5067706297f5 /drivers/hwtracing
parent1d27ff5aba2d36b152542e9d62158eb6584bcbd3 (diff)
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 <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/coresight.c5
1 files changed, 5 insertions, 0 deletions
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)) {