drm/exynos: Use devm_clk_get in exynos_drm_gsc.c

This eliminates the need for explicit clk_put and makes the
cleanup and exit path code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 04cc46c..e8ebd6e 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -1684,7 +1684,7 @@ static int __devinit gsc_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        /* clock control */
-       ctx->gsc_clk = clk_get(dev, "gscl");
+       ctx->gsc_clk = devm_clk_get(dev, "gscl");
        if (IS_ERR(ctx->gsc_clk)) {
                dev_err(dev, "failed to get gsc clock.\n");
                return PTR_ERR(ctx->gsc_clk);
@@ -1695,16 +1695,14 @@ static int __devinit gsc_probe(struct platform_device *pdev)
        ctx->regs = devm_request_and_ioremap(dev, ctx->regs_res);
        if (!ctx->regs) {
                dev_err(dev, "failed to map registers.\n");
-               ret = -ENXIO;
-               goto err_clk;
+               return -ENXIO;
        }
 
        /* resource irq */
        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
        if (!res) {
                dev_err(dev, "failed to request irq resource.\n");
-               ret = -ENOENT;
-               goto err_clk;
+               return -ENOENT;
        }
 
        ctx->irq = res->start;
@@ -1712,7 +1710,7 @@ static int __devinit gsc_probe(struct platform_device *pdev)
                IRQF_ONESHOT, "drm_gsc", ctx);
        if (ret < 0) {
                dev_err(dev, "failed to request irq.\n");
-               goto err_clk;
+               return ret;
        }
 
        /* context initailization */
@@ -1756,8 +1754,6 @@ err_ippdrv_register:
        pm_runtime_disable(dev);
 err_get_irq:
        free_irq(ctx->irq, ctx);
-err_clk:
-       clk_put(ctx->gsc_clk);
        return ret;
 }
 
@@ -1775,7 +1771,6 @@ static int __devexit gsc_remove(struct platform_device *pdev)
        pm_runtime_disable(dev);
 
        free_irq(ctx->irq, ctx);
-       clk_put(ctx->gsc_clk);
 
        return 0;
 }