[IrDA]: Fix Rx/Tx path race.

From: G. Liakhovetski <gl@dsa-ac.de>

We need to switch to NRM _before_ sending the final packet otherwise
we might hit a race condition where we get the first packet from the
peer while we're still in LAP_XMIT_P.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/net/irda/irlap.h b/include/net/irda/irlap.h
index f0248fb8e196..a3d370efb903 100644
--- a/include/net/irda/irlap.h
+++ b/include/net/irda/irlap.h
@@ -289,4 +289,21 @@ static inline void irlap_clear_disconnect(struct irlap_cb *self)
         self->disconnect_pending = FALSE;
 }
 
+/*
+ * Function irlap_next_state (self, state)
+ *
+ *    Switches state and provides debug information
+ *
+ */
+static inline void irlap_next_state(struct irlap_cb *self, IRLAP_STATE state)
+{
+        /*
+        if (!self || self->magic != LAP_MAGIC)
+                return;
+
+        IRDA_DEBUG(4, "next LAP state = %s\n", irlap_state[state]);
+        */
+        self->state = state;
+}
+
 #endif