[PATCH] media: add dump_stack() if called in atomic context

[Shuah Khan]

Change media_add_link() and media_devnode_create() to dump_stack when
called in atomic context.

Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Suggested-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
---
 drivers/media/media-entity.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index e95070b..66a5392 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -570,6 +570,9 @@ static struct media_link *media_add_link(struct list_head *head)
 {
 	struct media_link *link;
 
+	if (in_atomic())
+		dump_stack();
+
 	link = kzalloc(sizeof(*link), GFP_KERNEL);
 	if (link == NULL)
 		return NULL;
@@ -891,6 +894,9 @@ struct media_intf_devnode *media_devnode_create(struct media_device *mdev,
 {
 	struct media_intf_devnode *devnode;
 
+	if (in_atomic())
+		dump_stack();
+
 	devnode = kzalloc(sizeof(*devnode), GFP_KERNEL);
 	if (!devnode)
 		return NULL;
-- 
2.5.0