RE: [patch net] net: fec: fix compile with CONFIG_M5272

[Andy Duan]

From: Nikita Yushchenko <nikita.yoush@xxxxxxxxxxxxxxxxxx> Sent: Sunday, December 04, 2016 11:18 PM
 >To: David S. Miller <davem@xxxxxxxxxxxxx>; Andy Duan
 ><fugang.duan@xxxxxxx>; Troy Kisky <troy.kisky@xxxxxxxxxxxxxxxxxxx>;
 >Andrew Lunn <andrew@xxxxxxx>; Eric Nelson <eric@xxxxxxxxxx>; Philippe
 >Reynes <tremyfr@xxxxxxxxx>; Johannes Berg <johannes@xxxxxxxxxxxxxxxx>;
 >netdev@xxxxxxxxxxxxxxx
 >Cc: Chris Healy <cphealy@xxxxxxxxx>; Fabio Estevam
 ><fabio.estevam@xxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; Nikita
 >Yushchenko <nikita.yoush@xxxxxxxxxxxxxxxxxx>
 >Subject: [patch net] net: fec: fix compile with CONFIG_M5272
 >
 >Commit 4dfb80d18d05 ("net: fec: cache statistics while device is down")
 >introduced unconditional statistics-related actions.
 >
 >However, when driver is compiled with CONFIG_M5272, staticsics-related
 >definitions do not exist, which results into build errors.
 >
 >Fix that by adding needed #if !defined(CONFIG_M5272).
 >
 >Fixes: 4dfb80d18d05 ("net: fec: cache statistics while device is down")
 >Signed-off-by: Nikita Yushchenko <nikita.yoush@xxxxxxxxxxxxxxxxxx>
 >---
 > drivers/net/ethernet/freescale/fec_main.c | 12 +++++++++---
 > 1 file changed, 9 insertions(+), 3 deletions(-)
 >
 >diff --git a/drivers/net/ethernet/freescale/fec_main.c
 >b/drivers/net/ethernet/freescale/fec_main.c
 >index 6a20c24a2003..89e902767abb 100644
 >--- a/drivers/net/ethernet/freescale/fec_main.c
 >+++ b/drivers/net/ethernet/freescale/fec_main.c
 >@@ -2884,7 +2884,9 @@ fec_enet_close(struct net_device *ndev)
 > 	if (fep->quirks & FEC_QUIRK_ERR006687)
 > 		imx6q_cpuidle_fec_irqs_unused();
 >
 >+#if !defined(CONFIG_M5272)
 > 	fec_enet_update_ethtool_stats(ndev);
 >+#endif
It is better to define fec_enet_update_ethtool_stats()  for CONFIG_M5272 like static void fec_enet_update_ethtool_stats(struct net_device *dev){}, or directly return in .fec_enet_update_ethtool_stats():
@@ -2315,6 +2315,10 @@ static void fec_enet_update_ethtool_stats(struct net_device *dev)
        struct fec_enet_private *fep = netdev_priv(dev);
        int i;

+#if defined(CONFIG_M5272)
+       return;
+#endif
+
>
 > 	fec_enet_clk_enable(ndev, false);
 > 	pinctrl_pm_select_sleep_state(&fep->pdev->dev);
 >@@ -3192,7 +3194,9 @@ static int fec_enet_init(struct net_device *ndev)
 >
 > 	fec_restart(ndev);
 >
 >+#if !defined(CONFIG_M5272)
 > 	fec_enet_update_ethtool_stats(ndev);
 >+#endif
 >
ditto

 > 	return 0;
 > }
 >@@ -3292,9 +3296,11 @@ fec_probe(struct platform_device *pdev)
 > 	fec_enet_get_queue_num(pdev, &num_tx_qs, &num_rx_qs);
 >
 > 	/* Init network device */
 >-	ndev = alloc_etherdev_mqs(sizeof(struct fec_enet_private) +
 >-				  ARRAY_SIZE(fec_stats) * sizeof(u64),
 >-				  num_tx_qs, num_rx_qs);
 >+	ndev = alloc_etherdev_mqs(sizeof(struct fec_enet_private) #if
 >+!defined(CONFIG_M5272)
 >+				  + ARRAY_SIZE(fec_stats) * sizeof(u64)
 >#endif
 >+				  , num_tx_qs, num_rx_qs);
 > 	if (!ndev)
 > 		return -ENOMEM;
 >
 >--
 >2.1.4