[PATCH net-next 3/8] net: stmmac: mdio: simplify MDC clock divisor lookup

[Russell King (Oracle)]

As each lookup now iterates over each table in the same way, simplfy
the code to select the table, and then walk that table.

Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/stmmac_mdio.c | 27 +++++++------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 6292911fb54b..55dd3e07223d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -535,6 +535,7 @@ static const struct stmmac_clk_rate stmmac_xgmac_csr_to_mdc[] = {
  */
 static u32 stmmac_clk_csr_set(struct stmmac_priv *priv)
 {
+	const struct stmmac_clk_rate *rates;
 	unsigned long clk_rate;
 	u32 value = ~0;
 	int i;
@@ -548,26 +549,18 @@ static u32 stmmac_clk_csr_set(struct stmmac_priv *priv)
 	 * the frequency of clk_csr_i. So we do not change the default
 	 * divider.
 	 */
-	for (i = 0; stmmac_std_csr_to_mdc[i].rate; i++)
-		if (clk_rate > stmmac_std_csr_to_mdc[i].rate)
+	rates = stmmac_std_csr_to_mdc;
+	if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I)
+		rates = stmmac_sun8i_csr_to_mdc;
+	if (priv->plat->core_type == DWMAC_CORE_XGMAC)
+		rates = stmmac_xgmac_csr_to_mdc;
+
+	for (i = 0; rates[i].rate; i++)
+		if (clk_rate > rates[i].rate)
 			break;
-	if (stmmac_std_csr_to_mdc[i].cr != (u8)~0)
+	if (rates[i].cr != (u8)~0)
 		value = stmmac_std_csr_to_mdc[i].cr;
 
-	if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I) {
-		for (i = 0; stmmac_sun8i_csr_to_mdc[i].rate; i++)
-			if (clk_rate > stmmac_sun8i_csr_to_mdc[i].rate)
-				break;
-		value = stmmac_sun8i_csr_to_mdc[i].cr;
-	}
-
-	if (priv->plat->core_type == DWMAC_CORE_XGMAC) {
-		for (i = 0; stmmac_xgmac_csr_to_mdc[i].rate; i++)
-			if (clk_rate > stmmac_xgmac_csr_to_mdc[i].rate)
-				break;
-		value = stmmac_xgmac_csr_to_mdc[i].cr;
-	}
-
 	return value;
 }
 
-- 
2.47.3