nfc: nci: Add comment to explain NCI_HCI_MAX_PIPES

According to specification etsi 102 622 chapter 4.4 pipes identifier is 7 bits long giving a 127 possible pipes value. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
git-mirror · Apr 5, 2015 · 1f74f32 · 1f74f32
1 parent 05db6e9
commit 1f74f32
Showing 1 changed file with 4 additions and 0 deletions.
diff --git 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 {