igb: remove IGB_DESC_UNUSED since it is better handled by a function call

This patch removes IGB_DESC_UNUSED and replaces it with a function call
instead in order to cleanup some of the ugliness introduced by the macro.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index e18ac1bf45ff..4e8464b9df2e 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -182,10 +182,6 @@ struct igb_ring {
         char name[IFNAMSIZ + 5];
 };
 
-#define IGB_DESC_UNUSED(R) \
-        ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
-        (R)->next_to_clean - (R)->next_to_use - 1)
-
 #define E1000_RX_DESC_ADV(R, i)     \
         (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
 #define E1000_TX_DESC_ADV(R, i)     \