Drivers: hv: rename sc_lock to the more generic lock
sc_lock spinlock in struct vmbus_channel is being used to not only protect the
sc_list field, e.g. vmbus_open() function uses it to implement test-and-set
access to the state field. Rename it to the more generic 'lock' and add the
description.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 259023a..5a2ba67 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -734,7 +734,12 @@
*/
void (*sc_creation_callback)(struct vmbus_channel *new_sc);
- spinlock_t sc_lock;
+ /*
+ * The spinlock to protect the structure. It is being used to protect
+ * test-and-set access to various attributes of the structure as well
+ * as all sc_list operations.
+ */
+ spinlock_t lock;
/*
* All Sub-channels of a primary channel are linked here.
*/