From: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
commit 0872b2c0abc0e84ac82472959c8e14e35277549c upstream.
in mmphw_probe(), check the return value of clk_prepare_enable()
and return the error code if clk_prepare_enable() returns an
unexpected value.
Fixes: d63028c38905 ("video: mmp display controller support")
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/video/fbdev/mmp/hw/mmp_ctrl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/video/fbdev/mmp/hw/mmp_ctrl.c
+++ b/drivers/video/fbdev/mmp/hw/mmp_ctrl.c
@@ -519,7 +519,9 @@ static int mmphw_probe(struct platform_d
"unable to get clk %s\n", mi->clk_name);
goto failed;
}
- clk_prepare_enable(ctrl->clk);
+ ret = clk_prepare_enable(ctrl->clk);
+ if (ret)
+ goto failed;
/* init global regs */
ctrl_set_default(ctrl);
