[PATCH v3 4/7] clk: ingenic: tcu: Use contextual data instead of global variable

[Thierry Reding]

From: Thierry Reding <tred...@nvidia.com>

Pass the driver-specific data via the syscore struct and use it in the
syscore ops.

Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
Changes in v3:
- adjust for API changes and update commit message

 drivers/clk/ingenic/tcu.c | 63 +++++++++++++++++++--------------------
 1 file changed, 30 insertions(+), 33 deletions(-)

diff --git a/drivers/clk/ingenic/tcu.c b/drivers/clk/ingenic/tcu.c
index bc6a51da2072..8c6337d8e831 100644
--- a/drivers/clk/ingenic/tcu.c
+++ b/drivers/clk/ingenic/tcu.c
@@ -53,9 +53,9 @@ struct ingenic_tcu {
        struct clk *clk;
 
        struct clk_hw_onecell_data *clocks;
-};
 
-static struct ingenic_tcu *ingenic_tcu;
+       struct syscore syscore;
+};
 
 static inline struct ingenic_tcu_clk *to_tcu_clk(struct clk_hw *hw)
 {
@@ -332,6 +332,29 @@ static const struct of_device_id __maybe_unused 
ingenic_tcu_of_match[] __initcon
        { /* sentinel */ }
 };
 
+static int __maybe_unused tcu_pm_suspend(void *data)
+{
+       struct ingenic_tcu *tcu = data;
+
+       if (tcu->clk)
+               clk_disable(tcu->clk);
+
+       return 0;
+}
+
+static void __maybe_unused tcu_pm_resume(void *data)
+{
+       struct ingenic_tcu *tcu = data;
+
+       if (tcu->clk)
+               clk_enable(tcu->clk);
+}
+
+static const struct syscore_ops tcu_pm_ops __maybe_unused = {
+       .suspend = tcu_pm_suspend,
+       .resume = tcu_pm_resume,
+};
+
 static int __init ingenic_tcu_probe(struct device_node *np)
 {
        const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np);
@@ -430,7 +453,11 @@ static int __init ingenic_tcu_probe(struct device_node *np)
                goto err_unregister_ost_clock;
        }
 
-       ingenic_tcu = tcu;
+       if (IS_ENABLED(CONFIG_PM_SLEEP)) {
+               tcu->syscore.ops = &tcu_pm_ops;
+               tcu->syscore.data = tcu;
+               register_syscore(&tcu->syscore);
+       }
 
        return 0;
 
@@ -455,42 +482,12 @@ static int __init ingenic_tcu_probe(struct device_node 
*np)
        return ret;
 }
 
-static int __maybe_unused tcu_pm_suspend(void *data)
-{
-       struct ingenic_tcu *tcu = ingenic_tcu;
-
-       if (tcu->clk)
-               clk_disable(tcu->clk);
-
-       return 0;
-}
-
-static void __maybe_unused tcu_pm_resume(void *data)
-{
-       struct ingenic_tcu *tcu = ingenic_tcu;
-
-       if (tcu->clk)
-               clk_enable(tcu->clk);
-}
-
-static const struct syscore_ops __maybe_unused tcu_pm_ops = {
-       .suspend = tcu_pm_suspend,
-       .resume = tcu_pm_resume,
-};
-
-static struct syscore __maybe_unused tcu_pm = {
-       .ops = &tcu_pm_ops,
-};
-
 static void __init ingenic_tcu_init(struct device_node *np)
 {
        int ret = ingenic_tcu_probe(np);
 
        if (ret)
                pr_crit("Failed to initialize TCU clocks: %d\n", ret);
-
-       if (IS_ENABLED(CONFIG_PM_SLEEP))
-               register_syscore(&tcu_pm);
 }
 
 CLK_OF_DECLARE_DRIVER(jz4740_cgu, "ingenic,jz4740-tcu", ingenic_tcu_init);
-- 
2.51.0