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authorShawn Guo <shawn.guo@linaro.org>2013-02-25 14:57:26 +0800
committerShawn Guo <shawn.guo@linaro.org>2013-04-04 21:22:43 +0800
commitaaa20517c0880d021c4839eb172e8cfc03c43e21 (patch)
tree9224a04344cfd2b5f401730b11305e301af2c0c9 /drivers/dma/mxs-dma.c
parentf30fb03d4d3abe2da86918a92df0964cdf933e82 (diff)
dma: mxs-dma: use devm_* managed functions
Use devm_* managed functions to simplify probe() error handling. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/dma/mxs-dma.c')
-rw-r--r--drivers/dma/mxs-dma.c39
1 files changed, 9 insertions, 30 deletions
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 8f6d30d37c45..bb86f7ff55d9 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -674,7 +674,7 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
struct resource *iores;
int ret, i;
- mxs_dma = kzalloc(sizeof(*mxs_dma), GFP_KERNEL);
+ mxs_dma = devm_kzalloc(&pdev->dev, sizeof(*mxs_dma), GFP_KERNEL);
if (!mxs_dma)
return -ENOMEM;
@@ -689,24 +689,13 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
mxs_dma->dev_id = dma_type->id;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mxs_dma->base = devm_ioremap_resource(&pdev->dev, iores);
+ if (IS_ERR(mxs_dma->base))
+ return PTR_ERR(mxs_dma->base);
- if (!request_mem_region(iores->start, resource_size(iores),
- pdev->name)) {
- ret = -EBUSY;
- goto err_request_region;
- }
-
- mxs_dma->base = ioremap(iores->start, resource_size(iores));
- if (!mxs_dma->base) {
- ret = -ENOMEM;
- goto err_ioremap;
- }
-
- mxs_dma->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(mxs_dma->clk)) {
- ret = PTR_ERR(mxs_dma->clk);
- goto err_clk;
- }
+ mxs_dma->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(mxs_dma->clk))
+ return PTR_ERR(mxs_dma->clk);
dma_cap_set(DMA_SLAVE, mxs_dma->dma_device.cap_mask);
dma_cap_set(DMA_CYCLIC, mxs_dma->dma_device.cap_mask);
@@ -732,7 +721,7 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
ret = mxs_dma_init(mxs_dma);
if (ret)
- goto err_init;
+ return ret;
mxs_dma->dma_device.dev = &pdev->dev;
@@ -751,22 +740,12 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
ret = dma_async_device_register(&mxs_dma->dma_device);
if (ret) {
dev_err(mxs_dma->dma_device.dev, "unable to register\n");
- goto err_init;
+ return ret;
}
dev_info(mxs_dma->dma_device.dev, "initialized\n");
return 0;
-
-err_init:
- clk_put(mxs_dma->clk);
-err_clk:
- iounmap(mxs_dma->base);
-err_ioremap:
- release_mem_region(iores->start, resource_size(iores));
-err_request_region:
- kfree(mxs_dma);
- return ret;
}
static struct platform_driver mxs_dma_driver = {