Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751496AbaFMSEF (ORCPT ); Fri, 13 Jun 2014 14:04:05 -0400 Received: from mail-pb0-f44.google.com ([209.85.160.44]:57374 "EHLO mail-pb0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751044AbaFMSED (ORCPT ); Fri, 13 Jun 2014 14:04:03 -0400 Date: Fri, 13 Jun 2014 23:33:56 +0530 From: Himangi Saraogi To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: julia.lawall@lip6.fr Subject: [PATCH v2] net/nxp/lpc_eth: use devm_ functions Message-ID: <20140613180356.GA8582@himangi-Dell> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The various devm_ functions allocate memory that is released when a driver detaches. This patch uses dmam_alloc_coherent, devm_ioremap devm_clk_get etc. for data that is allocated in the probe function of platform device and is only freed in the remove function. The corresponding free functions are removed and many labels are done away with. Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall --- v2: undo use of devm_request_irq Not compile tested To send to: netdev@vger.kernel.org,linux-kernel@vger.kernel.org drivers/net/ethernet/nxp/lpc_eth.c | 31 ++++++++----------------------- 1 file changed, 8 insertions(+), 23 deletions(-) diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 422d9b5..35bdbad9 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -1350,7 +1350,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) ndev->irq = irq; /* Get clock for the device */ - pldat->clk = clk_get(&pdev->dev, NULL); + pldat->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(pldat->clk)) { dev_err(&pdev->dev, "error getting clock.\n"); ret = PTR_ERR(pldat->clk); @@ -1361,7 +1361,8 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) __lpc_eth_clock_enable(pldat, true); /* Map IO space */ - pldat->net_base = ioremap(res->start, res->end - res->start + 1); + pldat->net_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); if (!pldat->net_base) { dev_err(&pdev->dev, "failed to map registers\n"); ret = -ENOMEM; @@ -1371,7 +1372,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) ndev->name, ndev); if (ret) { dev_err(&pdev->dev, "error requesting interrupt.\n"); - goto err_out_iounmap; + goto err_out_disable_clocks; } /* Fill in the fields of the device structure with ethernet values. */ @@ -1407,9 +1408,9 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) /* Allocate a chunk of memory for the DMA ethernet buffers and descriptors */ pldat->dma_buff_base_v = - dma_alloc_coherent(&pldat->pdev->dev, - pldat->dma_buff_size, &dma_handle, - GFP_KERNEL); + dmam_alloc_coherent(&pldat->pdev->dev, + pldat->dma_buff_size, &dma_handle, + GFP_KERNEL); if (pldat->dma_buff_base_v == NULL) { ret = -ENOMEM; goto err_out_free_irq; @@ -1465,7 +1466,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) ret = register_netdev(ndev); if (ret) { dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); - goto err_out_dma_unmap; + goto err_out_free_irq; } platform_set_drvdata(pdev, ndev); @@ -1485,19 +1486,10 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) err_out_unregister_netdev: unregister_netdev(ndev); -err_out_dma_unmap: - if (!use_iram_for_net(&pldat->pdev->dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) - dma_free_coherent(&pldat->pdev->dev, pldat->dma_buff_size, - pldat->dma_buff_base_v, - pldat->dma_buff_base_p); err_out_free_irq: free_irq(ndev->irq, ndev); -err_out_iounmap: - iounmap(pldat->net_base); err_out_disable_clocks: clk_disable(pldat->clk); - clk_put(pldat->clk); err_out_free_dev: free_netdev(ndev); err_exit: @@ -1512,17 +1504,10 @@ static int lpc_eth_drv_remove(struct platform_device *pdev) unregister_netdev(ndev); - if (!use_iram_for_net(&pldat->pdev->dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) - dma_free_coherent(&pldat->pdev->dev, pldat->dma_buff_size, - pldat->dma_buff_base_v, - pldat->dma_buff_base_p); free_irq(ndev->irq, ndev); - iounmap(pldat->net_base); mdiobus_unregister(pldat->mii_bus); mdiobus_free(pldat->mii_bus); clk_disable(pldat->clk); - clk_put(pldat->clk); free_netdev(ndev); return 0; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/