clk: Add debugging for return values

Use the log_msg_ret() mechanism to get error-return information when
clocks fail to probe, etc.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index b75056718bf4fb06c08e0816bc6f955dba79a8af..d5c4e3cbe5105633ff334665f8bb1b80a04d0b27 100644 (file)
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -83,7 +83,7 @@ static int clk_get_by_index_tail(int ret, ofnode node,
        if (ret) {
                debug("%s: uclass_get_device_by_of_offset failed: err=%d\n",
                      __func__, ret);
-               return ret;
+               return log_msg_ret("get", ret);
        }
 
        clk->dev = dev_clk;
@@ -96,14 +96,15 @@ static int clk_get_by_index_tail(int ret, ofnode node,
                ret = clk_of_xlate_default(clk, args);
        if (ret) {
                debug("of_xlate() failed: %d\n", ret);
-               return ret;
+               return log_msg_ret("xlate", ret);
        }
 
        return clk_request(dev_clk, clk);
 err:
        debug("%s: Node '%s', property '%s', failed to request CLK index %d: %d\n",
              __func__, ofnode_get_name(node), list_name, index, ret);
-       return ret;
+
+       return log_msg_ret("prop", ret);
 }
 
 static int clk_get_by_indexed_prop(struct udevice *dev, const char *prop_name,
@@ -122,7 +123,7 @@ static int clk_get_by_indexed_prop(struct udevice *dev, const char *prop_name,
        if (ret) {
                debug("%s: fdtdec_parse_phandle_with_args failed: err=%d\n",
                      __func__, ret);
-               return ret;
+               return log_ret(ret);
        }
 
 
@@ -470,6 +471,7 @@ int clk_free(struct clk *clk)
 ulong clk_get_rate(struct clk *clk)
 {
        const struct clk_ops *ops;
+       int ret;
 
        debug("%s(clk=%p)\n", __func__, clk);
        if (!clk_valid(clk))
@@ -479,7 +481,11 @@ ulong clk_get_rate(struct clk *clk)
        if (!ops->get_rate)
                return -ENOSYS;
 
-       return ops->get_rate(clk);
+       ret = ops->get_rate(clk);
+       if (ret)
+               return log_ret(ret);
+
+       return 0;
 }
 
 struct clk *clk_get_parent(struct clk *clk)