diff options
author | Lad, Prabhakar <prabhakar.csengg@gmail.com> | 2014-06-20 15:59:34 +0400 |
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committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-07-15 11:32:06 +0400 |
commit | c6bf7e5f4a2588bdee97b28b76f9c3605b11ec03 (patch) | |
tree | b8ecbcd07ed51e271a607aac5c1da5b584a6578b /drivers/net/can | |
parent | 0854a7f13206d7523abe773235bbe4d13958fc4b (diff) | |
download | linux-c6bf7e5f4a2588bdee97b28b76f9c3605b11ec03.tar.xz |
can: c_can: convert to use devm * api
This patch uses devm_* APIs as they are device managed and make code simpler.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
-rw-r--r-- | drivers/net/can/c_can/c_can_platform.c | 43 |
1 files changed, 10 insertions, 33 deletions
diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c index 824108cd9fd5..e29b6d051103 100644 --- a/drivers/net/can/c_can/c_can_platform.c +++ b/drivers/net/can/c_can/c_can_platform.c @@ -208,40 +208,31 @@ static int c_can_plat_probe(struct platform_device *pdev) } /* get the appropriate clk */ - clk = clk_get(&pdev->dev, NULL); + clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { - dev_err(&pdev->dev, "no clock defined\n"); - ret = -ENODEV; + ret = PTR_ERR(clk); goto exit; } /* get the platform data */ - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - if (!mem || irq <= 0) { + if (irq <= 0) { ret = -ENODEV; - goto exit_free_clk; - } - - if (!request_mem_region(mem->start, resource_size(mem), - KBUILD_MODNAME)) { - dev_err(&pdev->dev, "resource unavailable\n"); - ret = -ENODEV; - goto exit_free_clk; + goto exit; } - addr = ioremap(mem->start, resource_size(mem)); - if (!addr) { - dev_err(&pdev->dev, "failed to map can port\n"); - ret = -ENOMEM; - goto exit_release_mem; + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + addr = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(addr)) { + ret = PTR_ERR(addr); + goto exit; } /* allocate the c_can device */ dev = alloc_c_can_dev(); if (!dev) { ret = -ENOMEM; - goto exit_iounmap; + goto exit; } priv = netdev_priv(dev); @@ -321,12 +312,6 @@ static int c_can_plat_probe(struct platform_device *pdev) exit_free_device: free_c_can_dev(dev); -exit_iounmap: - iounmap(addr); -exit_release_mem: - release_mem_region(mem->start, resource_size(mem)); -exit_free_clk: - clk_put(clk); exit: dev_err(&pdev->dev, "probe failed\n"); @@ -336,18 +321,10 @@ exit: static int c_can_plat_remove(struct platform_device *pdev) { struct net_device *dev = platform_get_drvdata(pdev); - struct c_can_priv *priv = netdev_priv(dev); - struct resource *mem; unregister_c_can_dev(dev); free_c_can_dev(dev); - iounmap(priv->base); - - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(mem->start, resource_size(mem)); - - clk_put(priv->priv); return 0; } |