[PATCH] dma: mxs-dma: Convert to devm_ioremap_resource()

Fabio Estevam
2013-03-11T23:50:49Z

Converting to devm_ioremap_resource() can make the code cleaner and smaller.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
drivers/dma/mxs-dma.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 8f6d30d..8a9939e4 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -689,16 +689,9 @@ 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);
-
- 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;
+ mxs_dma->base = devm_ioremap_resource(&pdev->dev, iores);
+ if (IS_ERR(mxs_dma->base)) {
+ ret = PTR_ERR(mxs_dma->base);
goto err_ioremap;
}

@@ -761,10 +754,7 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
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:
+err_ioremap:
kfree(mxs_dma);
return ret;
}
--
1.7.9.5