[PATCH net-next 1/2] net: stmmac: ptp: rearrange n_ext_ts initialisation

["Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>]

Use local variables for n_ext_ts rather than referencing the DMA
capability several times.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index 98da499ba3b1..654d04f8c373 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -335,6 +335,7 @@ const struct ptp_clock_info dwmac1000_ptp_clock_ops = {
 void stmmac_ptp_register(struct stmmac_priv *priv)
 {
 	unsigned int pps_out_num = priv->dma_cap.pps_out_num;
+	unsigned int n_ext_ts;
 	int i;
 
 	if (pps_out_num > STMMAC_PPS_MAX) {
@@ -358,8 +359,9 @@ void stmmac_ptp_register(struct stmmac_priv *priv)
 	if (pps_out_num)
 		priv->ptp_clock_ops.n_per_out = pps_out_num;
 
-	if (priv->dma_cap.aux_snapshot_n)
-		priv->ptp_clock_ops.n_ext_ts = priv->dma_cap.aux_snapshot_n;
+	n_ext_ts = priv->dma_cap.aux_snapshot_n;
+	if (n_ext_ts)
+		priv->ptp_clock_ops.n_ext_ts = n_ext_ts;
 
 	if (priv->plat->ptp_max_adj)
 		priv->ptp_clock_ops.max_adj = priv->plat->ptp_max_adj;
-- 
2.47.3