openwrtv3/target/linux/ramips/patches-3.9/0141-clocksource-make-clocksource_of_init-pass-a-device_n.patch

From ec2ed8cdbe8b3d24261f0d88eb039e9d71e5d588 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 23 May 2013 16:58:12 +0200
Subject: [PATCH 141/164] clocksource: make clocksource_of_init() pass a
 device_node pointer

If we look at the clocksources that are OF enabled we will notice, that they
all do a of_find_matching_node() when being called. This patch changes
clocksource_of_init() to always pass the struct device_node pointer to the
init function.

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 drivers/clocksource/bcm2835_timer.c |   12 +-----------
 drivers/clocksource/clksrc-of.c     |    4 ++--
 drivers/clocksource/tegra20_timer.c |   14 +-------------
 drivers/clocksource/vt8500_timer.c  |   14 +-------------
 4 files changed, 5 insertions(+), 39 deletions(-)

diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c
index 50c68fe..766611d 100644
--- a/drivers/clocksource/bcm2835_timer.c
+++ b/drivers/clocksource/bcm2835_timer.c
@@ -95,23 +95,13 @@ static irqreturn_t bcm2835_time_interrupt(int irq, void *dev_id)
 	}
 }
 
-static struct of_device_id bcm2835_time_match[] __initconst = {
-	{ .compatible = "brcm,bcm2835-system-timer" },
-	{}
-};
-
-static void __init bcm2835_timer_init(void)
+static void __init bcm2835_timer_init(struct device_node *node)
 {
-	struct device_node *node;
 	void __iomem *base;
 	u32 freq;
 	int irq;
 	struct bcm2835_timer *timer;
 
-	node = of_find_matching_node(NULL, bcm2835_time_match);
-	if (!node)
-		panic("No bcm2835 timer node");
-
 	base = of_iomap(node, 0);
 	if (!base)
 		panic("Can't remap registers");
diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index bdabdaa..3ef11fb 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -26,10 +26,10 @@ void __init clocksource_of_init(void)
 {
 	struct device_node *np;
 	const struct of_device_id *match;
-	void (*init_func)(void);
+	void (*init_func)(struct device_node *);
 
 	for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
 		init_func = match->data;
-		init_func();
+		init_func(np);
 	}
 }
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 0bde03f..e698d8e 100644
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -154,29 +154,17 @@ static struct irqaction tegra_timer_irq = {
 	.dev_id		= &tegra_clockevent,
 };
 
-static const struct of_device_id timer_match[] __initconst = {
-	{ .compatible = "nvidia,tegra20-timer" },
-	{}
-};
-
 static const struct of_device_id rtc_match[] __initconst = {
 	{ .compatible = "nvidia,tegra20-rtc" },
 	{}
 };
 
-static void __init tegra20_init_timer(void)
+static void __init tegra20_init_timer(struct device_node *np)
 {
-	struct device_node *np;
 	struct clk *clk;
 	unsigned long rate;
 	int ret;
 
-	np = of_find_matching_node(NULL, timer_match);
-	if (!np) {
-		pr_err("Failed to find timer DT node\n");
-		BUG();
-	}
-
 	timer_reg_base = of_iomap(np, 0);
 	if (!timer_reg_base) {
 		pr_err("Can't map timer registers\n");
diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
index 8efc86b..2422552 100644
--- a/drivers/clocksource/vt8500_timer.c
+++ b/drivers/clocksource/vt8500_timer.c
@@ -129,22 +129,10 @@ static struct irqaction irq = {
 	.dev_id  = &clockevent,
 };
 
-static struct of_device_id vt8500_timer_ids[] = {
-	{ .compatible = "via,vt8500-timer" },
-	{ }
-};
-
-static void __init vt8500_timer_init(void)
+static void __init vt8500_timer_init(struct device_node *np)
 {
-	struct device_node *np;
 	int timer_irq;
 
-	np = of_find_matching_node(NULL, vt8500_timer_ids);
-	if (!np) {
-		pr_err("%s: Timer description missing from Device Tree\n",
-								__func__);
-		return;
-	}
 	regbase = of_iomap(np, 0);
 	if (!regbase) {
 		pr_err("%s: Missing iobase description in Device Tree\n",
-- 
1.7.10.4