From 436bf63ba5792f2f7bb5e1a4e8d38df8f1a44edc Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Thu, 26 Dec 2013 10:42:34 +0900 Subject: mtd: lantiq-flash: Use devm_kzalloc() Use devm_kzalloc() to make cleanup paths simpler. Also, checking return value of devm_kzalloc() is added in order to check if the allocation succeded. Signed-off-by: Jingoo Han Acked-by: John Crispin Signed-off-by: Brian Norris --- drivers/mtd/maps/lantiq-flash.c | 37 ++++++++++++++++--------------------- 1 file changed, 16 insertions(+), 21 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c index d7ac65d1d569..93c507a6f862 100644 --- a/drivers/mtd/maps/lantiq-flash.c +++ b/drivers/mtd/maps/lantiq-flash.c @@ -123,24 +123,28 @@ ltq_mtd_probe(struct platform_device *pdev) return -ENODEV; } - ltq_mtd = kzalloc(sizeof(struct ltq_mtd), GFP_KERNEL); + ltq_mtd = devm_kzalloc(&pdev->dev, sizeof(struct ltq_mtd), GFP_KERNEL); + if (!ltq_mtd) + return -ENOMEM; + platform_set_drvdata(pdev, ltq_mtd); ltq_mtd->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!ltq_mtd->res) { dev_err(&pdev->dev, "failed to get memory resource\n"); - err = -ENOENT; - goto err_out; + return -ENOENT; } - ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL); + ltq_mtd->map = devm_kzalloc(&pdev->dev, sizeof(struct map_info), + GFP_KERNEL); + if (!ltq_mtd->map) + return -ENOMEM; + ltq_mtd->map->phys = ltq_mtd->res->start; ltq_mtd->map->size = resource_size(ltq_mtd->res); ltq_mtd->map->virt = devm_ioremap_resource(&pdev->dev, ltq_mtd->res); - if (IS_ERR(ltq_mtd->map->virt)) { - err = PTR_ERR(ltq_mtd->map->virt); - goto err_out; - } + if (IS_ERR(ltq_mtd->map->virt)) + return PTR_ERR(ltq_mtd->map->virt); ltq_mtd->map->name = ltq_map_name; ltq_mtd->map->bankwidth = 2; @@ -155,8 +159,7 @@ ltq_mtd_probe(struct platform_device *pdev) if (!ltq_mtd->mtd) { dev_err(&pdev->dev, "probing failed\n"); - err = -ENXIO; - goto err_free; + return -ENXIO; } ltq_mtd->mtd->owner = THIS_MODULE; @@ -177,10 +180,6 @@ ltq_mtd_probe(struct platform_device *pdev) err_destroy: map_destroy(ltq_mtd->mtd); -err_free: - kfree(ltq_mtd->map); -err_out: - kfree(ltq_mtd); return err; } @@ -189,13 +188,9 @@ ltq_mtd_remove(struct platform_device *pdev) { struct ltq_mtd *ltq_mtd = platform_get_drvdata(pdev); - if (ltq_mtd) { - if (ltq_mtd->mtd) { - mtd_device_unregister(ltq_mtd->mtd); - map_destroy(ltq_mtd->mtd); - } - kfree(ltq_mtd->map); - kfree(ltq_mtd); + if (ltq_mtd && ltq_mtd->mtd) { + mtd_device_unregister(ltq_mtd->mtd); + map_destroy(ltq_mtd->mtd); } return 0; } -- cgit v1.2.3