MLK-17491-31 clk: imx: clk-pfdv2: add error checking for invalid pfd index

Give a warning when get an invalid pfd index.

Cc: Bai Ping <ping.bai@nxp.com>
Reviewed-by: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c
index 6c97fe2..8538f38 100644 (file)
--- a/drivers/clk/imx/clk-pfdv2.c
+++ b/drivers/clk/imx/clk-pfdv2.c
@@ -158,6 +158,8 @@ struct clk *imx_clk_pfdv2(const char *name, const char *parent_name,
        struct clk *clk;
        struct clk_init_data init;
 
+       WARN_ON(idx > 3);
+
        pfd = kzalloc(sizeof(*pfd), GFP_KERNEL);
        if (!pfd)
                return ERR_PTR(-ENOMEM);