net: cassini: use nested lock annotation

In the cas_lock_tx function we acquire multiple locks in a loop and
need to use nested lock annotation to prevent lockdep warnings.

Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
index df8d383acf48ed0da087bb19d144499484ac0376..b9ac20f42651bd90e33e5fcb3da38db5401117a2 100644 (file)
--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -246,7 +246,7 @@ static inline void cas_lock_tx(struct cas *cp)
        int i;
 
        for (i = 0; i < N_TX_RINGS; i++)
-               spin_lock(&cp->tx_lock[i]);
+               spin_lock_nested(&cp->tx_lock[i], i);
 }
 
 static inline void cas_lock_all(struct cas *cp)