net: ethernet: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/8390/ne.c

@@ -849,7 +849,6 @@ static int ne_drv_remove(struct platform_device *pdev)
 		free_irq(dev->irq, dev);
 		release_region(dev->base_addr, NE_IO_EXTENT);
 		free_netdev(dev);
-		platform_set_drvdata(pdev, NULL);
 	}
 	return 0;
 }

drivers/net/ethernet/adi/bfin_mac.c

@@ -1719,7 +1719,6 @@ out_err_mii_probe:
 	mdiobus_unregister(lp->mii_bus);
 	mdiobus_free(lp->mii_bus);
 out_err_probe_mac:
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(ndev);
 
 	return rc;
@@ -1732,8 +1731,6 @@ static int bfin_mac_remove(struct platform_device *pdev)
 
 	bfin_phc_release(lp);
 
-	platform_set_drvdata(pdev, NULL);
-
 	lp->mii_bus->priv = NULL;
 
 	unregister_netdev(ndev);
@@ -1868,7 +1865,6 @@ static int bfin_mii_bus_remove(struct platform_device *pdev)
 	struct bfin_mii_bus_platform_data *mii_bus_pd =
 		dev_get_platdata(&pdev->dev);
 
-	platform_set_drvdata(pdev, NULL);
 	mdiobus_unregister(miibus);
 	kfree(miibus->irq);
 	mdiobus_free(miibus);

drivers/net/ethernet/amd/au1000_eth.c

@@ -1301,8 +1301,6 @@ static int au1000_remove(struct platform_device *pdev)
 	int i;
 	struct resource *base, *macen;
 
-	platform_set_drvdata(pdev, NULL);
-
 	unregister_netdev(dev);
 	mdiobus_unregister(aup->mii_bus);
 	mdiobus_free(aup->mii_bus);

drivers/net/ethernet/broadcom/bcm63xx_enet.c

@@ -1847,7 +1847,6 @@ static int bcm_enet_remove(struct platform_device *pdev)
 	clk_disable_unprepare(priv->mac_clk);
 	clk_put(priv->mac_clk);
 
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(dev);
 	return 0;
 }

drivers/net/ethernet/cadence/at91_ether.c

@@ -435,7 +435,6 @@ static int at91ether_remove(struct platform_device *pdev)
 	unregister_netdev(dev);
 	clk_disable(lp->pclk);
 	free_netdev(dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/net/ethernet/cadence/macb.c

@@ -1649,7 +1649,6 @@ err_out_put_pclk:
 err_out_free_dev:
 	free_netdev(dev);
 err_out:
-	platform_set_drvdata(pdev, NULL);
 	return err;
 }
 
@@ -1675,7 +1674,6 @@ static int __exit macb_remove(struct platform_device *pdev)
 		clk_disable_unprepare(bp->pclk);
 		clk_put(bp->pclk);
 		free_netdev(dev);
-		platform_set_drvdata(pdev, NULL);
 	}
 
 	return 0;

drivers/net/ethernet/calxeda/xgmac.c

@@ -1790,7 +1790,6 @@ err_io:
 	free_netdev(ndev);
 err_alloc:
 	release_mem_region(res->start, resource_size(res));
-	platform_set_drvdata(pdev, NULL);
 	return ret;
 }
 
@@ -1813,7 +1812,6 @@ static int xgmac_remove(struct platform_device *pdev)
 	free_irq(ndev->irq, ndev);
 	free_irq(priv->pmt_irq, ndev);
 
-	platform_set_drvdata(pdev, NULL);
 	unregister_netdev(ndev);
 	netif_napi_del(&priv->napi);
 

drivers/net/ethernet/cirrus/ep93xx_eth.c

@@ -783,7 +783,6 @@ static int ep93xx_eth_remove(struct platform_device *pdev)
 	dev = platform_get_drvdata(pdev);
 	if (dev == NULL)
 		return 0;
-	platform_set_drvdata(pdev, NULL);
 
 	ep = netdev_priv(dev);
 

drivers/net/ethernet/davicom/dm9000.c

@@ -1699,8 +1699,6 @@ dm9000_drv_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	unregister_netdev(ndev);
 	dm9000_release_board(pdev, netdev_priv(ndev));
 	free_netdev(ndev);		/* free device structure */

drivers/net/ethernet/ethoc.c

@@ -1147,8 +1147,6 @@ static int ethoc_remove(struct platform_device *pdev)
 	struct net_device *netdev = platform_get_drvdata(pdev);
 	struct ethoc *priv = netdev_priv(netdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (netdev) {
 		netif_napi_del(&priv->napi);
 		phy_disconnect(priv->phy);

drivers/net/ethernet/faraday/ftgmac100.c

@@ -1311,7 +1311,6 @@ err_ioremap:
 	release_resource(priv->res);
 err_req_mem:
 	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 err_alloc_etherdev:
 	return err;
@@ -1335,7 +1334,6 @@ static int __exit ftgmac100_remove(struct platform_device *pdev)
 	release_resource(priv->res);
 
 	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 	return 0;
 }

drivers/net/ethernet/faraday/ftmac100.c

@@ -1149,7 +1149,6 @@ err_ioremap:
 	release_resource(priv->res);
 err_req_mem:
 	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 err_alloc_etherdev:
 	return err;
@@ -1169,7 +1168,6 @@ static int __exit ftmac100_remove(struct platform_device *pdev)
 	release_resource(priv->res);
 
 	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 	return 0;
 }

drivers/net/ethernet/freescale/fec_main.c

@@ -2024,8 +2024,6 @@ fec_drv_remove(struct platform_device *pdev)
 	clk_disable_unprepare(fep->clk_ipg);
 	free_netdev(ndev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/net/ethernet/korina.c

@@ -1211,7 +1211,6 @@ static int korina_remove(struct platform_device *pdev)
 	iounmap(lp->rx_dma_regs);
 	iounmap(lp->tx_dma_regs);
 
-	platform_set_drvdata(pdev, NULL);
 	unregister_netdev(bif->dev);
 	free_netdev(bif->dev);
 

drivers/net/ethernet/marvell/mv643xx_eth.c

@@ -2813,8 +2813,6 @@ static int mv643xx_eth_remove(struct platform_device *pdev)
 
 	free_netdev(mp->dev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/net/ethernet/marvell/mvneta.c

@@ -2804,8 +2804,6 @@ static int mvneta_remove(struct platform_device *pdev)
 	irq_dispose_mapping(dev->irq);
 	free_netdev(dev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/net/ethernet/marvell/pxa168_eth.c

@@ -1602,7 +1602,6 @@ static int pxa168_eth_remove(struct platform_device *pdev)
 	unregister_netdev(dev);
 	cancel_work_sync(&pep->tx_timeout_task);
 	free_netdev(dev);
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/net/ethernet/micrel/ks8695net.c

@@ -1600,7 +1600,6 @@ ks8695_drv_remove(struct platform_device *pdev)
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct ks8695_priv *ksp = netdev_priv(ndev);
 
-	platform_set_drvdata(pdev, NULL);
 	netif_napi_del(&ksp->napi);
 
 	unregister_netdev(ndev);

drivers/net/ethernet/micrel/ks8842.c

@@ -1250,7 +1250,6 @@ static int ks8842_remove(struct platform_device *pdev)
 	iounmap(adapter->hw_addr);
 	free_netdev(netdev);
 	release_mem_region(iomem->start, resource_size(iomem));
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/net/ethernet/micrel/ks8851_mll.c

@@ -1671,7 +1671,6 @@ static int ks8851_remove(struct platform_device *pdev)
 	iounmap(ks->hw_addr);
 	free_netdev(netdev);
 	release_mem_region(iomem->start, resource_size(iomem));
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 
 }

drivers/net/ethernet/netx-eth.c

@@ -422,7 +422,6 @@ exit_free_pfifo:
 exit_free_xc:
 	free_xc(priv->xc);
 exit_free_netdev:
-	platform_set_drvdata(pdev, NULL);
 	free_netdev(ndev);
 exit:
 	return ret;

drivers/net/ethernet/nuvoton/w90p910_ether.c

@@ -1051,7 +1051,6 @@ failed_put_clk:
 	clk_put(ether->clk);
 failed_free_rxirq:
 	free_irq(ether->rxirq, pdev);
-	platform_set_drvdata(pdev, NULL);
 failed_free_txirq:
 	free_irq(ether->txirq, pdev);
 failed_free_io:
@@ -1080,7 +1079,6 @@ static int w90p910_ether_remove(struct platform_device *pdev)
 	free_irq(ether->rxirq, dev);
 
 	del_timer_sync(&ether->check_timer);
-	platform_set_drvdata(pdev, NULL);
 
 	free_netdev(dev);
 	return 0;

drivers/net/ethernet/nxp/lpc_eth.c

@@ -1483,7 +1483,6 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
 	return 0;
 
 err_out_unregister_netdev:
-	platform_set_drvdata(pdev, NULL);
 	unregister_netdev(ndev);
 err_out_dma_unmap:
 	if (!use_iram_for_net(&pldat->pdev->dev) ||
@@ -1511,7 +1510,6 @@ static int lpc_eth_drv_remove(struct platform_device *pdev)
 	struct netdata_local *pldat = netdev_priv(ndev);
 
 	unregister_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 
 	if (!use_iram_for_net(&pldat->pdev->dev) ||
 	    pldat->dma_buff_size > lpc32xx_return_iram_size())

drivers/net/ethernet/renesas/sh_eth.c

@@ -2803,7 +2803,6 @@ static int sh_eth_drv_remove(struct platform_device *pdev)
 	unregister_netdev(ndev);
 	pm_runtime_disable(&pdev->dev);
 	free_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/net/ethernet/s6gmac.c

@@ -1040,7 +1040,6 @@ static int s6gmac_remove(struct platform_device *pdev)
 		unregister_netdev(dev);
 		free_irq(dev->irq, dev);
 		free_netdev(dev);
-		platform_set_drvdata(pdev, NULL);
 	}
 	return 0;
 }

drivers/net/ethernet/seeq/sgiseeq.c

@@ -818,7 +818,6 @@ static int __exit sgiseeq_remove(struct platform_device *pdev)
 	dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,
 			     sp->srings_dma);
 	free_netdev(dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/net/ethernet/sgi/meth.c

@@ -863,7 +863,6 @@ static int __exit meth_remove(struct platform_device *pdev)
 
 	unregister_netdev(dev);
 	free_netdev(dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/net/ethernet/smsc/smc911x.c

@@ -2087,7 +2087,6 @@ static int smc911x_drv_probe(struct platform_device *pdev)
 	ndev->base_addr = res->start;
 	ret = smc911x_probe(ndev);
 	if (ret != 0) {
-		platform_set_drvdata(pdev, NULL);
 		iounmap(addr);
 release_both:
 		free_netdev(ndev);
@@ -2113,7 +2112,6 @@ static int smc911x_drv_remove(struct platform_device *pdev)
 	struct resource *res;
 
 	DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
-	platform_set_drvdata(pdev, NULL);
 
 	unregister_netdev(ndev);
 

drivers/net/ethernet/smsc/smc91x.c

@@ -2299,7 +2299,6 @@ static int smc_drv_probe(struct platform_device *pdev)
 	return 0;
 
  out_iounmap:
-	platform_set_drvdata(pdev, NULL);
 	iounmap(addr);
  out_release_attrib:
 	smc_release_attrib(pdev, ndev);
@@ -2319,8 +2318,6 @@ static int smc_drv_remove(struct platform_device *pdev)
 	struct smc_local *lp = netdev_priv(ndev);
 	struct resource *res;
 
-	platform_set_drvdata(pdev, NULL);
-
 	unregister_netdev(ndev);
 
 	free_irq(ndev->irq, ndev);

drivers/net/ethernet/smsc/smsc911x.c

@@ -2284,7 +2284,6 @@ static int smsc911x_drv_remove(struct platform_device *pdev)
 	mdiobus_unregister(pdata->mii_bus);
 	mdiobus_free(pdata->mii_bus);
 
-	platform_set_drvdata(pdev, NULL);
 	unregister_netdev(dev);
 	free_irq(dev->irq, dev);
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
@@ -2539,7 +2538,6 @@ out_disable_resources:
 out_enable_resources_fail:
 	smsc911x_free_resources(pdev);
 out_request_resources_fail:
-	platform_set_drvdata(pdev, NULL);
 	iounmap(pdata->ioaddr);
 	free_netdev(dev);
 out_release_io_1:

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

@@ -171,8 +171,6 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 	if (priv->plat->exit)
 		priv->plat->exit(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return ret;
 }
 

drivers/net/ethernet/ti/cpsw.c

@@ -1940,7 +1940,6 @@ static int cpsw_remove(struct platform_device *pdev)
 	struct cpsw_priv *priv = netdev_priv(ndev);
 	int i;
 
-	platform_set_drvdata(pdev, NULL);
 	if (priv->data.dual_emac)
 		unregister_netdev(cpsw_get_slave_ndev(priv, 1));
 	unregister_netdev(ndev);

drivers/net/ethernet/ti/davinci_emac.c

@@ -2037,8 +2037,6 @@ static int davinci_emac_remove(struct platform_device *pdev)
 
 	dev_notice(&ndev->dev, "DaVinci EMAC: davinci_emac_remove()\n");
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (priv->txchan)
 		cpdma_chan_destroy(priv->txchan);
 	if (priv->rxchan)

drivers/net/ethernet/tundra/tsi108_eth.c

@@ -1682,7 +1682,6 @@ static int tsi108_ether_remove(struct platform_device *pdev)
 
 	unregister_netdev(dev);
 	tsi108_stop_ethernet(dev);
-	platform_set_drvdata(pdev, NULL);
 	iounmap(priv->regs);
 	iounmap(priv->phyregs);
 	free_netdev(dev);

drivers/net/ethernet/wiznet/w5100.c

@@ -734,7 +734,6 @@ err_hw_probe:
 	unregister_netdev(ndev);
 err_register:
 	free_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 	return err;
 }
 
@@ -750,7 +749,6 @@ static int w5100_remove(struct platform_device *pdev)
 
 	unregister_netdev(ndev);
 	free_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/net/ethernet/wiznet/w5300.c

@@ -646,7 +646,6 @@ err_hw_probe:
 	unregister_netdev(ndev);
 err_register:
 	free_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 	return err;
 }
 
@@ -662,7 +661,6 @@ static int w5300_remove(struct platform_device *pdev)
 
 	unregister_netdev(ndev);
 	free_netdev(ndev);
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/net/ethernet/xscale/ixp4xx_eth.c

@@ -1472,7 +1472,6 @@ err_phy_dis:
 	phy_disconnect(port->phydev);
 err_free_mem:
 	npe_port_tab[NPE_ID(port->id)] = NULL;
-	platform_set_drvdata(pdev, NULL);
 	release_resource(port->mem_res);
 err_npe_rel:
 	npe_release(port->npe);
@@ -1489,7 +1488,6 @@ static int eth_remove_one(struct platform_device *pdev)
 	unregister_netdev(dev);
 	phy_disconnect(port->phydev);
 	npe_port_tab[NPE_ID(port->id)] = NULL;
-	platform_set_drvdata(pdev, NULL);
 	npe_release(port->npe);
 	release_resource(port->mem_res);
 	free_netdev(dev);