[PATCH 1/1] gpu: drm: aspeed: fix value check in aspeed_gfx_load()

[Yuanjun Gong]

in aspeed_gfx_load(), check the return value of clk_prepare_enable()
and return the error code if clk_prepare_enable() returns an
unexpected value.

Fixes: 4f2a8f5898ec ("drm: Add ASPEED GFX driver")
Signed-off-by: Yuanjun Gong <ruc_gongyuan...@163.com>
---
 drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c 
b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index c8c7f8215155..3bfa39bc4f7e 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -199,7 +199,11 @@ static int aspeed_gfx_load(struct drm_device *drm)
                        "missing or invalid clk device tree entry");
                return PTR_ERR(priv->clk);
        }
-       clk_prepare_enable(priv->clk);
+       ret = clk_prepare_enable(priv->clk);
+       if (ret) {
+               dev_err(&pdev->dev, "Failed to enable clock\n");
+               return ret;
+       }
 
        /* Sanitize control registers */
        writel(0, priv->base + CRT_CTRL1);
-- 
2.17.1