5.4-stable review patch. If anyone has any objections, please let me know.
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From: Yuanjun Gong ruc_gongyuanjun@163.com
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@163.com Signed-off-by: Helge Deller deller@gmx.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -510,7 +510,9 @@ static int mmphw_probe(struct platform_d ret = -ENOENT; goto failed; } - clk_prepare_enable(ctrl->clk); + ret = clk_prepare_enable(ctrl->clk); + if (ret) + goto failed;
/* init global regs */ ctrl_set_default(ctrl);