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>

1 files changed, 6 insertions, 11 deletions

diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c
index 614776a30943..99bec6cf3306 100644
--- 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;
 }