leds: renesas: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches. This makes the code smaller and a bit simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c
index 614776a309433725688946067ebbc1b005fe9546..99bec6cf3306c100ca605fcf0181f7e7eb6bfd84 100644 (file)
--- a/drivers/leds/leds-renesas-tpu.c
+++ b/drivers/leds/leds-renesas-tpu.c
@@ -263,18 +263,18 @@ static int __devinit r_tpu_probe(struct platform_device *pdev)
        }
 
        /* map memory, let mapbase point to our channel */
-       p->mapbase = ioremap_nocache(res->start, resource_size(res));
+       p->mapbase = devm_ioremap_nocache(&pdev->dev, res->start,
+                                       resource_size(res));
        if (p->mapbase == NULL) {
                dev_err(&pdev->dev, "failed to remap I/O memory\n");
                return -ENXIO;
        }
 
        /* get hold of clock */
-       p->clk = clk_get(&pdev->dev, NULL);
+       p->clk = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(p->clk)) {
                dev_err(&pdev->dev, "cannot get clock\n");
-               ret = PTR_ERR(p->clk);
-               goto err0;
+               return PTR_ERR(p->clk);
        }
 
        p->pdev = pdev;
@@ -293,7 +293,7 @@ static int __devinit r_tpu_probe(struct platform_device *pdev)
        p->ldev.flags |= LED_CORE_SUSPENDRESUME;
        ret = led_classdev_register(&pdev->dev, &p->ldev);
        if (ret < 0)
-               goto err1;
+               goto err0;
 
        /* max_brightness may be updated by the LED core code */
        p->min_rate = p->ldev.max_brightness * p->refresh_rate;
@@ -301,11 +301,8 @@ static int __devinit r_tpu_probe(struct platform_device *pdev)
        pm_runtime_enable(&pdev->dev);
        return 0;
 
- err1:
-       r_tpu_set_pin(p, R_TPU_PIN_UNUSED, LED_OFF);
-       clk_put(p->clk);
  err0:
-       iounmap(p->mapbase);
+       r_tpu_set_pin(p, R_TPU_PIN_UNUSED, LED_OFF);
        return ret;
 }
 
@@ -320,9 +317,7 @@ static int __devexit r_tpu_remove(struct platform_device *pdev)
        r_tpu_set_pin(p, R_TPU_PIN_UNUSED, LED_OFF);
 
        pm_runtime_disable(&pdev->dev);
-       clk_put(p->clk);
 
-       iounmap(p->mapbase);
        return 0;
 }