clk: actions: Don't reference clk_init_data after registration

[ Upstream commit cf9ec1fc6d7cceb73e7f1efd079d2eae173fdf57 ]

A future patch is going to change semantics of clk_register() so that
clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
referencing this member here so that we don't run into NULL pointer
exceptions.

Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190731193517.237136-2-sboyd@kernel.org
[sboyd@kernel.org: Move name to after checking for error or NULL hw]
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/actions/owl-common.c b/drivers/clk/actions/owl-common.c
index 61c1071..e9be34b 100644 (file)
--- a/drivers/clk/actions/owl-common.c
+++ b/drivers/clk/actions/owl-common.c
@@ -67,16 +67,17 @@ int owl_clk_probe(struct device *dev, struct clk_hw_onecell_data *hw_clks)
        struct clk_hw *hw;
 
        for (i = 0; i < hw_clks->num; i++) {
+               const char *name;
 
                hw = hw_clks->hws[i];
-
                if (IS_ERR_OR_NULL(hw))
                        continue;
 
+               name = hw->init->name;
                ret = devm_clk_hw_register(dev, hw);
                if (ret) {
                        dev_err(dev, "Couldn't register clock %d - %s\n",
-                               i, hw->init->name);
+                               i, name);
                        return ret;
                }
        }