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_gongyuanjun@xxxxxxx>
---
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
