[media] exynos-gsc: Use devm_clk_get()

devm_clk_get() is a device managed function and makes error handling
a bit simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index c8b82c0..0c22ad5 100644 (file)
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1002,11 +1002,8 @@ static void *gsc_get_drv_data(struct platform_device *pdev)
 
 static void gsc_clk_put(struct gsc_dev *gsc)
 {
-       if (!IS_ERR(gsc->clock)) {
+       if (!IS_ERR(gsc->clock))
                clk_unprepare(gsc->clock);
-               clk_put(gsc->clock);
-               gsc->clock = NULL;
-       }
 }
 
 static int gsc_clk_get(struct gsc_dev *gsc)
@@ -1015,28 +1012,22 @@ static int gsc_clk_get(struct gsc_dev *gsc)
 
        dev_dbg(&gsc->pdev->dev, "gsc_clk_get Called\n");
 
-       gsc->clock = clk_get(&gsc->pdev->dev, GSC_CLOCK_GATE_NAME);
+       gsc->clock = devm_clk_get(&gsc->pdev->dev, GSC_CLOCK_GATE_NAME);
        if (IS_ERR(gsc->clock)) {
                dev_err(&gsc->pdev->dev, "failed to get clock~~~: %s\n",
                        GSC_CLOCK_GATE_NAME);
-               goto err_clk_get;
+               return PTR_ERR(gsc->clock);
        }
 
        ret = clk_prepare(gsc->clock);
        if (ret < 0) {
                dev_err(&gsc->pdev->dev, "clock prepare failed for clock: %s\n",
                        GSC_CLOCK_GATE_NAME);
-               clk_put(gsc->clock);
                gsc->clock = ERR_PTR(-EINVAL);
-               goto err_clk_prepare;
+               return ret;
        }
 
        return 0;
-
-err_clk_prepare:
-       gsc_clk_put(gsc);
-err_clk_get:
-       return -ENXIO;
 }
 
 static int gsc_m2m_suspend(struct gsc_dev *gsc)