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-rw-r--r--include/net/nfc/nci_core.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index 34a6e09b3f7f..d4dcc7199fd7 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -138,6 +138,10 @@ struct nci_conn_info {
#define NCI_HCI_INVALID_HOST 0x80
#define NCI_HCI_MAX_CUSTOM_GATES 50
+/*
+ * According to specification 102 622 chapter 4.4 Pipes,
+ * the pipe identifier is 7 bits long.
+ */
#define NCI_HCI_MAX_PIPES 127
struct nci_hci_gate {