[PATCH] mfd: jz4740-adc: use devm_kzalloc

[Devendra Naga]

use devm_kzalloc and remove the error path free'ing and unload free'ing
as the devm resource functions free them.

Signed-off-by: Devendra Naga <devendra.a...@gmail.com>
---
 drivers/mfd/jz4740-adc.c | 23 +++++++----------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index c6b6d7d..3efdb65 100644
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -211,7 +211,7 @@ static int __devinit jz4740_adc_probe(struct 
platform_device *pdev)
        int ret;
        int irq_base;
 
-       adc = kmalloc(sizeof(*adc), GFP_KERNEL);
+       adc = devm_kzalloc(&pdev->dev, sizeof(*adc), GFP_KERNEL);
        if (!adc) {
                dev_err(&pdev->dev, "Failed to allocate driver structure\n");
                return -ENOMEM;
@@ -219,32 +219,28 @@ static int __devinit jz4740_adc_probe(struct 
platform_device *pdev)
 
        adc->irq = platform_get_irq(pdev, 0);
        if (adc->irq < 0) {
-               ret = adc->irq;
-               dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
-               goto err_free;
+               dev_err(&pdev->dev, "Failed to get platform irq: %d\n", 
adc->irq);
+               return adc->irq;
        }
 
        irq_base = platform_get_irq(pdev, 1);
        if (irq_base < 0) {
-               ret = irq_base;
-               dev_err(&pdev->dev, "Failed to get irq base: %d\n", ret);
-               goto err_free;
+               dev_err(&pdev->dev, "Failed to get irq base: %d\n", irq_base);
+               return irq_base;
        }
 
        mem_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!mem_base) {
-               ret = -ENOENT;
                dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
-               goto err_free;
+               return -ENOENT;
        }
 
        /* Only request the shared registers for the MFD driver */
        adc->mem = request_mem_region(mem_base->start, JZ_REG_ADC_STATUS,
                                        pdev->name);
        if (!adc->mem) {
-               ret = -EBUSY;
                dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-               goto err_free;
+               return -EBUSY;
        }
 
        adc->base = ioremap_nocache(adc->mem->start, resource_size(adc->mem));
@@ -301,9 +297,6 @@ err_iounmap:
        iounmap(adc->base);
 err_release_mem_region:
        release_mem_region(adc->mem->start, resource_size(adc->mem));
-err_free:
-       kfree(adc);
-
        return ret;
 }
 
@@ -325,8 +318,6 @@ static int __devexit jz4740_adc_remove(struct 
platform_device *pdev)
 
        platform_set_drvdata(pdev, NULL);
 
-       kfree(adc);
-
        return 0;
 }
 
-- 
1.7.11.7

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