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mfd: davinci_voicecodec: Convert to use devm_* APIs 

devm_* APIs are device managed and make code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Sachin Kamat 2013-06-18 15:35:40 +05:30 committed by Lee Jones
parent e578438820
commit c8eaed458e
2 changed files with 10 additions and 40 deletions
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48
drivers/mfd/davinci_voicecodec.c
View File

@ -46,7 +46,7 @@ void davinci_vc_write(struct davinci_vc *davinci_vc,
static int __init davinci_vc_probe(struct platform_device *pdev)
{
struct davinci_vc *davinci_vc;
struct resource *res, *mem;
struct resource *res;
struct mfd_cell *cell = NULL;
int ret;
@ -58,7 +58,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
return -ENOMEM;
}
davinci_vc->clk = clk_get(&pdev->dev, NULL);
davinci_vc->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(davinci_vc->clk)) {
dev_dbg(&pdev->dev,
"could not get the clock for voice codec\n");
@ -67,35 +67,18 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
clk_enable(davinci_vc->clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "no mem resource\n");
ret = -ENODEV;
goto fail2;
}
davinci_vc->pbase = res->start;
davinci_vc->base_size = resource_size(res);
mem = request_mem_region(davinci_vc->pbase, davinci_vc->base_size,
pdev->name);
if (!mem) {
dev_err(&pdev->dev, "VCIF region already claimed\n");
ret = -EBUSY;
goto fail2;
}
davinci_vc->base = ioremap(davinci_vc->pbase, davinci_vc->base_size);
if (!davinci_vc->base) {
dev_err(&pdev->dev, "can't ioremap mem resource.\n");
ret = -ENOMEM;
goto fail3;
davinci_vc->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(davinci_vc->base)) {
ret = PTR_ERR(davinci_vc->base);
goto fail;
}
res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!res) {
dev_err(&pdev->dev, "no DMA resource\n");
ret = -ENXIO;
goto fail4;
goto fail;
}
davinci_vc->davinci_vcif.dma_tx_channel = res->start;
@ -106,7 +89,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
if (!res) {
dev_err(&pdev->dev, "no DMA resource\n");
ret = -ENXIO;
goto fail4;
goto fail;
}
davinci_vc->davinci_vcif.dma_rx_channel = res->start;
@ -132,19 +115,13 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
DAVINCI_VC_CELLS, NULL, 0, NULL);
if (ret != 0) {
dev_err(&pdev->dev, "fail to register client devices\n");
goto fail4;
goto fail;
}
return 0;
fail4:
iounmap(davinci_vc->base);
fail3:
release_mem_region(davinci_vc->pbase, davinci_vc->base_size);
fail2:
fail:
clk_disable(davinci_vc->clk);
clk_put(davinci_vc->clk);
davinci_vc->clk = NULL;
return ret;
}
@ -155,12 +132,7 @@ static int davinci_vc_remove(struct platform_device *pdev)
mfd_remove_devices(&pdev->dev);
iounmap(davinci_vc->base);
release_mem_region(davinci_vc->pbase, davinci_vc->base_size);
clk_disable(davinci_vc->clk);
clk_put(davinci_vc->clk);
davinci_vc->clk = NULL;
return 0;
}

2
include/linux/mfd/davinci_voicecodec.h
View File

@ -112,8 +112,6 @@ struct davinci_vc {
/* Memory resources */
void __iomem *base;
resource_size_t pbase;
size_t base_size;
/* MFD cells */
struct mfd_cell cells[DAVINCI_VC_CELLS];