From adb21bfef00c101fda9de7700266c032bd4fb722 Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Thu, 30 Jun 2011 12:39:12 -0600
Subject: [PATCH] --- yaml --- r: 256781 b: refs/heads/master c:
 b84e773119e1401e6ebd8906fb0b2a43bbe64871 h: refs/heads/master i:   256779:
 469dfbb95d94637daed1f950cd93dc965a18e2bf v: v3

---
 [refs]                               |  2 +-
 trunk/drivers/tty/serial/of_serial.c | 37 +++++++++++-----------------
 2 files changed, 16 insertions(+), 23 deletions(-)

diff --git a/[refs] b/[refs]
index bc4798de045c..852d08c0d3b5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f09bc831b7693f93ecb95dea7180d55b45b88e76
+refs/heads/master: b84e773119e1401e6ebd8906fb0b2a43bbe64871
diff --git a/trunk/drivers/tty/serial/of_serial.c b/trunk/drivers/tty/serial/of_serial.c
index 36038ed8f09a..dbfbfda27537 100644
--- a/trunk/drivers/tty/serial/of_serial.c
+++ b/trunk/drivers/tty/serial/of_serial.c
@@ -32,17 +32,17 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
 {
 	struct resource resource;
 	struct device_node *np = ofdev->dev.of_node;
-	const __be32 *clk, *spd;
-	const __be32 *prop;
-	int ret, prop_size;
+	u32 clk, spd, prop;
+	int ret;
 
 	memset(port, 0, sizeof *port);
-	spd = of_get_property(np, "current-speed", NULL);
-	clk = of_get_property(np, "clock-frequency", NULL);
-	if (!clk) {
+	if (of_property_read_u32(np, "clock-frequency", &clk)) {
 		dev_warn(&ofdev->dev, "no clock-frequency property set\n");
 		return -ENODEV;
 	}
+	/* If current-speed was set, then try not to change it. */
+	if (of_property_read_u32(np, "current-speed", &spd) == 0)
+		port->custom_divisor = clk / (16 * spd);
 
 	ret = of_address_to_resource(np, 0, &resource);
 	if (ret) {
@@ -54,20 +54,17 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
 	port->mapbase = resource.start;
 
 	/* Check for shifted address mapping */
-	prop = of_get_property(np, "reg-offset", &prop_size);
-	if (prop && (prop_size == sizeof(u32)))
-		port->mapbase += be32_to_cpup(prop);
+	if (of_property_read_u32(np, "reg-offset", &prop) == 0)
+		port->mapbase += prop;
 
 	/* Check for registers offset within the devices address range */
-	prop = of_get_property(np, "reg-shift", &prop_size);
-	if (prop && (prop_size == sizeof(u32)))
-		port->regshift = be32_to_cpup(prop);
+	if (of_property_read_u32(np, "reg-shift", &prop) == 0)
+		port->regshift = prop;
 
 	port->irq = irq_of_parse_and_map(np, 0);
 	port->iotype = UPIO_MEM;
-	prop = of_get_property(np, "reg-io-width", &prop_size);
-	if (prop && (prop_size == sizeof(u32))) {
-		switch (be32_to_cpup(prop)) {
+	if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
+		switch (prop) {
 		case 1:
 			port->iotype = UPIO_MEM;
 			break;
@@ -75,21 +72,17 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
 			port->iotype = UPIO_MEM32;
 			break;
 		default:
-			dev_warn(&ofdev->dev,
-				 "unsupported io width (%d bytes)\n",
-				 be32_to_cpup(prop));
+			dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",
+				 prop);
 			return -EINVAL;
 		}
 	}
 
 	port->type = type;
-	port->uartclk = be32_to_cpup(clk);
+	port->uartclk = clk;
 	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
 		| UPF_FIXED_PORT | UPF_FIXED_TYPE;
 	port->dev = &ofdev->dev;
-	/* If current-speed was set, then try not to change it. */
-	if (spd)
-		port->custom_divisor = be32_to_cpup(clk) / (16 * (be32_to_cpup(spd)));
 
 	return 0;
 }