fbdev: ep93xx-fb: fix return value check in ep93xxfb_probe

function clk_prepare_enable may fail in ep93xxfb_probe, therefore,
add a return value check to clk_prepare_enable and handle the
error.

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/video/fbdev/ep93xx-fb.c b/drivers/video/fbdev/ep93xx-fb.c
index 94fe52928be251eae5d3815bc0e0341ff45883c1..22158d9ca8ddf9a5a4ff883cae75716c561c038d 100644 (file)
--- a/drivers/video/fbdev/ep93xx-fb.c
+++ b/drivers/video/fbdev/ep93xx-fb.c
@@ -548,7 +548,9 @@ static int ep93xxfb_probe(struct platform_device *pdev)
        }
 
        ep93xxfb_set_par(info);
-       clk_prepare_enable(fbi->clk);
+       err = clk_prepare_enable(fbi->clk);
+       if (err)
+               goto failed_check;
 
        err = register_framebuffer(info);
        if (err)