iio: at91: Use devm_iio_device_alloc

Using devm_iio_device_alloc makes code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index b6db6a0..423e079 100644 (file)
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -589,11 +589,9 @@ static int at91_adc_probe(struct platform_device *pdev)
        struct resource *res;
        u32 reg;
 
-       idev = iio_device_alloc(sizeof(struct at91_adc_state));
-       if (idev == NULL) {
-               ret = -ENOMEM;
-               goto error_ret;
-       }
+       idev = devm_iio_device_alloc(&pdev->dev, sizeof(struct at91_adc_state));
+       if (!idev)
+               return -ENOMEM;
 
        st = iio_priv(idev);
 
@@ -604,8 +602,7 @@ static int at91_adc_probe(struct platform_device *pdev)
 
        if (ret) {
                dev_err(&pdev->dev, "No platform data available.\n");
-               ret = -EINVAL;
-               goto error_free_device;
+               return -EINVAL;
        }
 
        platform_set_drvdata(pdev, idev);
@@ -618,16 +615,14 @@ static int at91_adc_probe(struct platform_device *pdev)
        st->irq = platform_get_irq(pdev, 0);
        if (st->irq < 0) {
                dev_err(&pdev->dev, "No IRQ ID is designated\n");
-               ret = -ENODEV;
-               goto error_free_device;
+               return -ENODEV;
        }
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
        st->reg_base = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(st->reg_base)) {
-               ret = PTR_ERR(st->reg_base);
-               goto error_free_device;
+               return PTR_ERR(st->reg_base);
        }
 
        /*
@@ -642,7 +637,7 @@ static int at91_adc_probe(struct platform_device *pdev)
                          idev);
        if (ret) {
                dev_err(&pdev->dev, "Failed to allocate IRQ.\n");
-               goto error_free_device;
+               return ret;
        }
 
        st->clk = devm_clk_get(&pdev->dev, "adc_clk");
@@ -752,9 +747,6 @@ error_disable_clk:
        clk_disable_unprepare(st->clk);
 error_free_irq:
        free_irq(st->irq, idev);
-error_free_device:
-       iio_device_free(idev);
-error_ret:
        return ret;
 }
 
@@ -769,7 +761,6 @@ static int at91_adc_remove(struct platform_device *pdev)
        clk_disable_unprepare(st->adc_clk);
        clk_disable_unprepare(st->clk);
        free_irq(st->irq, idev);
-       iio_device_free(idev);
 
        return 0;
 }