On Wed, May 31, 2017 at 11:21 PM, Thomas Bogendoerfer
[off-list ref] wrote:

sccnxp driver doesn't get the correct uart clock rate, if CONFIG_HAVE_CLOCK
is disabled. Correct usage of clk API to make it work with/without it.

uart -> UART
clk -> CLK

        clk = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(clk)) {
-               if (PTR_ERR(clk) == -EPROBE_DEFER) {
-                       ret = -EPROBE_DEFER;
+               ret = PTR_ERR(clk);
+               if (ret == -EPROBE_DEFER)
                        goto err_out;
-               }
+               uartclk = 0;
+       } else {

+               clk_prepare_enable(clk);

This might fail.

+               uartclk = clk_get_rate(clk);
+       }

-- 
With Best Regards,
Andy Shevchenko