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-rw-r--r--drivers/staging/greybus/greybus_protocols.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index 216a1d1..6afd0a6 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -96,6 +96,7 @@ struct gb_operation_msg_hdr {
/* Generic request types */
+#define GB_REQUEST_TYPE_PING 0x00
#define GB_REQUEST_TYPE_PROTOCOL_VERSION 0x01
#define GB_REQUEST_TYPE_INVALID 0x7f
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