greybus: operation: add active counter

Add active counter to track operations that are in use.

Note that the active count is always less than the reference count.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index c16f64dd9784..b32386636f6e 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -127,6 +127,8 @@ struct gb_operation {
 	struct completion	completion;
 
 	struct kref		kref;
+	atomic_t		active;
+
 	struct list_head	links;		/* connection->operations */
 };