[NET]: Document ->hard_start_xmit() locking in netdevices.txt

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt
index 1509f3aff968f69381d829bc97b8acf0a926dac7..3c0a5ba614d7c39146668f0b990e3fab03cceb06 100644 (file)
--- a/Documentation/networking/netdevices.txt
+++ b/Documentation/networking/netdevices.txt
@@ -51,6 +51,8 @@ dev->hard_start_xmit:
        set_multicast_list
        Context: BHs disabled
        Notes: netif_queue_stopped() is guaranteed false
+               Interrupts must be enabled when calling hard_start_xmit.
+                (Interrupts must also be enabled when enabling the BH handler.)
        Return codes: 
        o NETDEV_TX_OK everything ok. 
        o NETDEV_TX_BUSY Cannot transmit packet, try later