reset: lpc18xx: get rid of global variables for restart notifier

Moving the notifier_block into the drivers priv struct allows us
to retrive the priv struct with container_of and remove the
global variables.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/reset/reset-lpc18xx.c b/drivers/reset/reset-lpc18xx.c
index 3b8a4f5a1ff658837e57a5c67cc45d79a488cd7a..54cca005517105ba203144c7fbb68db170cf1f14 100644 (file)
--- a/drivers/reset/reset-lpc18xx.c
+++ b/drivers/reset/reset-lpc18xx.c
@@ -35,6 +35,7 @@
 
 struct lpc18xx_rgu_data {
        struct reset_controller_dev rcdev;
+       struct notifier_block restart_nb;
        struct clk *clk_delay;
        struct clk *clk_reg;
        void __iomem *base;
@@ -44,12 +45,13 @@ struct lpc18xx_rgu_data {
 
 #define to_rgu_data(p) container_of(p, struct lpc18xx_rgu_data, rcdev)
 
-static void __iomem *rgu_base;
-
-static int lpc18xx_rgu_restart(struct notifier_block *this, unsigned long mode,
+static int lpc18xx_rgu_restart(struct notifier_block *nb, unsigned long mode,
                               void *cmd)
 {
-       writel(BIT(LPC18XX_RGU_CORE_RST), rgu_base + LPC18XX_RGU_CTRL0);
+       struct lpc18xx_rgu_data *rc = container_of(nb, struct lpc18xx_rgu_data,
+                                                  restart_nb);
+
+       writel(BIT(LPC18XX_RGU_CORE_RST), rc->base + LPC18XX_RGU_CTRL0);
        mdelay(2000);
 
        pr_emerg("%s: unable to restart system\n", __func__);
@@ -57,11 +59,6 @@ static int lpc18xx_rgu_restart(struct notifier_block *this, unsigned long mode,
        return NOTIFY_DONE;
 }
 
-static struct notifier_block lpc18xx_rgu_restart_nb = {
-       .notifier_call = lpc18xx_rgu_restart,
-       .priority = 192,
-};
-
 /*
  * The LPC18xx RGU has mostly self-deasserting resets except for the
  * two reset lines going to the internal Cortex-M0 cores.
@@ -205,8 +202,9 @@ static int lpc18xx_rgu_probe(struct platform_device *pdev)
                goto dis_clks;
        }
 
-       rgu_base = rc->base;
-       ret = register_restart_handler(&lpc18xx_rgu_restart_nb);
+       rc->restart_nb.priority = 192,
+       rc->restart_nb.notifier_call = lpc18xx_rgu_restart,
+       ret = register_restart_handler(&rc->restart_nb);
        if (ret)
                dev_warn(&pdev->dev, "failed to register restart handler\n");
 
@@ -225,7 +223,7 @@ static int lpc18xx_rgu_remove(struct platform_device *pdev)
        struct lpc18xx_rgu_data *rc = platform_get_drvdata(pdev);
        int ret;
 
-       ret = unregister_restart_handler(&lpc18xx_rgu_restart_nb);
+       ret = unregister_restart_handler(&rc->restart_nb);
        if (ret)
                dev_warn(&pdev->dev, "failed to unregister restart handler\n");