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-rw-r--r--drivers/acpi/fan.c34
-rw-r--r--drivers/acpi/processor_core.c30
-rw-r--r--drivers/acpi/video.c28
3 files changed, 49 insertions, 43 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 4d535c50d82..c8e3cba423e 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -260,22 +260,24 @@ static int acpi_fan_add(struct acpi_device *device)
result = PTR_ERR(cdev);
goto end;
}
- printk(KERN_INFO PREFIX
- "%s is registered as cooling_device%d\n",
- device->dev.bus_id, cdev->id);
-
- acpi_driver_data(device) = cdev;
- result = sysfs_create_link(&device->dev.kobj,
- &cdev->device.kobj,
- "thermal_cooling");
- if (result)
- return result;
-
- result = sysfs_create_link(&cdev->device.kobj,
- &device->dev.kobj,
- "device");
- if (result)
- return result;
+ if (cdev) {
+ printk(KERN_INFO PREFIX
+ "%s is registered as cooling_device%d\n",
+ device->dev.bus_id, cdev->id);
+
+ acpi_driver_data(device) = cdev;
+ result = sysfs_create_link(&device->dev.kobj,
+ &cdev->device.kobj,
+ "thermal_cooling");
+ if (result)
+ return result;
+
+ result = sysfs_create_link(&cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result)
+ return result;
+ }
result = acpi_fan_add_fs(device);
if (result)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 3a136f6c66a..36a68fa114e 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -674,20 +674,22 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
result = PTR_ERR(pr->cdev);
goto end;
}
- printk(KERN_INFO PREFIX
- "%s is registered as cooling_device%d\n",
- device->dev.bus_id, pr->cdev->id);
-
- result = sysfs_create_link(&device->dev.kobj,
- &pr->cdev->device.kobj,
- "thermal_cooling");
- if (result)
- return result;
- result = sysfs_create_link(&pr->cdev->device.kobj,
- &device->dev.kobj,
- "device");
- if (result)
- return result;
+ if (pr->cdev) {
+ printk(KERN_INFO PREFIX
+ "%s is registered as cooling_device%d\n",
+ device->dev.bus_id, pr->cdev->id);
+
+ result = sysfs_create_link(&device->dev.kobj,
+ &pr->cdev->device.kobj,
+ "thermal_cooling");
+ if (result)
+ return result;
+ result = sysfs_create_link(&pr->cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result)
+ return result;
+ }
if (pr->flags.throttling) {
printk(KERN_INFO PREFIX "%s [%s] (supports",
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index fe09b57de61..12fb44f1676 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -734,19 +734,21 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
if (IS_ERR(device->cdev))
return;
- printk(KERN_INFO PREFIX
- "%s is registered as cooling_device%d\n",
- device->dev->dev.bus_id, device->cdev->id);
- result = sysfs_create_link(&device->dev->dev.kobj,
- &device->cdev->device.kobj,
- "thermal_cooling");
- if (result)
- printk(KERN_ERR PREFIX "Create sysfs link\n");
- result = sysfs_create_link(&device->cdev->device.kobj,
- &device->dev->dev.kobj,
- "device");
- if (result)
- printk(KERN_ERR PREFIX "Create sysfs link\n");
+ if (device->cdev) {
+ printk(KERN_INFO PREFIX
+ "%s is registered as cooling_device%d\n",
+ device->dev->dev.bus_id, device->cdev->id);
+ result = sysfs_create_link(&device->dev->dev.kobj,
+ &device->cdev->device.kobj,
+ "thermal_cooling");
+ if (result)
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ result = sysfs_create_link(&device->cdev->device.kobj,
+ &device->dev->dev.kobj,
+ "device");
+ if (result)
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ }
}
if (device->cap._DCS && device->cap._DSS){
static int count = 0;