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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>
This commit is contained in:
Joachim Eastwood 2016-02-20 20:06:49 +01:00 committed by Philipp Zabel
parent 0b52297f22
commit 773fe72630
1 changed files with 10 additions and 12 deletions
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22
drivers/reset/reset-lpc18xx.c
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@ -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");