bnx2x: simplify definition of RX_SGE_MASK_LEN and use it.

Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

@@ -411,8 +411,7 @@ union db_prod {
 
 
 /* Number of u64 elements in SGE mask array */
-#define RX_SGE_MASK_LEN			((NUM_RX_SGE_PAGES * RX_SGE_CNT) / \
-					 BIT_VEC64_ELEM_SZ)
+#define RX_SGE_MASK_LEN			(NUM_RX_SGE / BIT_VEC64_ELEM_SZ)
 #define RX_SGE_MASK_LEN_MASK		(RX_SGE_MASK_LEN - 1)
 #define NEXT_SGE_MASK_ELEM(el)		(((el) + 1) & RX_SGE_MASK_LEN_MASK)
 

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h

@@ -874,8 +874,7 @@ static inline void bnx2x_clear_sge_mask_next_elems(struct bnx2x_fastpath *fp)
 static inline void bnx2x_init_sge_ring_bit_mask(struct bnx2x_fastpath *fp)
 {
 	/* Set the mask to all 1-s: it's faster to compare to 0 than to 0xf-s */
-	memset(fp->sge_mask, 0xff,
-	       (NUM_RX_SGE >> BIT_VEC64_ELEM_SHIFT)*sizeof(u64));
+	memset(fp->sge_mask, 0xff, sizeof(fp->sge_mask));
 
 	/* Clear the two last indices in the page to 1:
 	   these are the indices that correspond to the "next" element,