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mfd: ti_am335x_tscadc: Use devm_ioremap_resource() 

Use devm_ioremap_resource() in order to make the code simpler,
and remove redundant return value check of platform_get_resource()
because the value is checked by devm_ioremap_resource().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Jingoo Han 2014-02-12 14:31:49 +09:00 committed by Lee Jones
parent bcb5a7d335
commit 924ff918ad
1 changed files with 4 additions and 19 deletions
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23
drivers/mfd/ti_am335x_tscadc.c
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@ -183,12 +183,6 @@ static int ti_tscadc_probe(struct platform_device *pdev)
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "no memory resource defined.\n");
return -EINVAL;
}
/* Allocate memory for device */
tscadc = devm_kzalloc(&pdev->dev,
sizeof(struct ti_tscadc_dev), GFP_KERNEL);
@ -205,19 +199,10 @@ static int ti_tscadc_probe(struct platform_device *pdev)
} else
tscadc->irq = err;
res = devm_request_mem_region(&pdev->dev,
res->start, resource_size(res), pdev->name);
if (!res) {
dev_err(&pdev->dev, "failed to reserve registers.\n");
return -EBUSY;
}
tscadc->tscadc_base = devm_ioremap(&pdev->dev,
res->start, resource_size(res));
if (!tscadc->tscadc_base) {
dev_err(&pdev->dev, "failed to map registers.\n");
return -ENOMEM;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
tscadc->tscadc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(tscadc->tscadc_base))
return PTR_ERR(tscadc->tscadc_base);
tscadc->regmap_tscadc = devm_regmap_init_mmio(&pdev->dev,
tscadc->tscadc_base, &tscadc_regmap_config);