From 9662ec19229c89825acac1d62a9d78fb89f8dda5 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sun, 14 Jan 2018 20:47:44 +0300 Subject: [PATCH] sh_eth: get Ether port # only when needed The dual-port Ether configurations always have a shared TSU to e.g. pass the packets between those ports. With the TSU init. code gathered under the single *if*, we now can only get the port # from 'platform_device::id' only when we actually need it (and not recalculate it each time)... Signed-off-by: Sergei Shtylyov Reviewed-by: Geert Uytterhoeven Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 14d5373ddc6b..a0fe05968348 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -3125,7 +3125,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev) const struct platform_device_id *id = platform_get_device_id(pdev); struct sh_eth_private *mdp; struct net_device *ndev; - int ret, devno; + int ret; /* get base addr */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -3137,10 +3137,6 @@ static int sh_eth_drv_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); - devno = pdev->id; - if (devno < 0) - devno = 0; - ret = platform_get_irq(pdev, 0); if (ret < 0) goto out_release; @@ -3223,6 +3219,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev) } if (mdp->cd->tsu) { + int port = pdev->id < 0 ? 0 : pdev->id % 2; struct resource *rtsu; rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1); @@ -3234,7 +3231,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev) /* We can only request the TSU region for the first port * of the two sharing this TSU for the probe to succeed... */ - if (devno % 2 == 0 && + if (port == 0 && !devm_request_mem_region(&pdev->dev, rtsu->start, resource_size(rtsu), dev_name(&pdev->dev))) { @@ -3250,11 +3247,11 @@ static int sh_eth_drv_probe(struct platform_device *pdev) ret = -ENOMEM; goto out_release; } - mdp->port = devno % 2; + mdp->port = port; ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER; /* Need to init only the first port of the two sharing a TSU */ - if (devno % 2 == 0) { + if (port == 0) { if (mdp->cd->chip_reset) mdp->cd->chip_reset(ndev); -- 2.45.2