linux-kernel - [PATCH 1/4] make cdev attribuition the last step

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Date:	Mon, 18 Feb 2008 17:56:50 -0300
From:	Glauber Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, andrew.grover@...el.com,
	paul.s.diefenbaugh@...el.com, linux@...do.de,
	anil.s.keshavamurthy@...el.com, lenb@...nel.org,
	linux-acpi@...r.kernel.org, Glauber Costa <gcosta@...hat.com>
Subject: [PATCH 1/4] make cdev attribuition the last step

This patch uses a temporary variable "cdev" instead of using
directly pr->cdev. Through it, we can tell later whether or not
this code was completed properly: by checking for pr->cdev != NULL
Signed-off-by: Glauber Costa <gcosta@...hat.com>
---
 drivers/acpi/processor_core.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 75ccf5d..9480203 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -622,7 +622,7 @@ static int __cpuinit acpi_processor_star
 	int result = 0;
 	acpi_status status = AE_OK;
 	struct acpi_processor *pr;
-
+	struct thermal_cooling_device *cdev;
 
 	pr = acpi_driver_data(device);
 
@@ -668,24 +668,26 @@ #endif
 
 	acpi_processor_power_init(pr, device);
 
-	pr->cdev = thermal_cooling_device_register("Processor", device,
+	cdev = thermal_cooling_device_register("Processor", device,
 						&processor_cooling_ops);
-	if (pr->cdev)
+	if (cdev)
 		printk(KERN_INFO PREFIX
 			"%s is registered as cooling_device%d\n",
-			device->dev.bus_id, pr->cdev->id);
+			device->dev.bus_id, cdev->id);
 	else
 		goto end;
 
-	result = sysfs_create_link(&device->dev.kobj, &pr->cdev->device.kobj,
+	result = sysfs_create_link(&device->dev.kobj, &cdev->device.kobj,
 					"thermal_cooling");
 	if (result)
 		return result;
-	result = sysfs_create_link(&pr->cdev->device.kobj, &device->dev.kobj,
+	result = sysfs_create_link(&cdev->device.kobj, &device->dev.kobj,
 					"device");
 	if (result)
 		return result;
 
+	pr->cdev = cdev;
+
 	if (pr->flags.throttling) {
 		printk(KERN_INFO PREFIX "%s [%s] (supports",
 		       acpi_device_name(device), acpi_device_bid(device));
-- 
1.4.2

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