ACPI: elide a non-zero test on a result that is never 0
Julia Lawall [Fri, 11 Apr 2008 02:09:24 +0000 (10:09 +0800)]
thermal_cooling_device_register used to return NULL if THERMAL is "n".
As the ACPI fan, processor and video drivers SELECT the generic
thermal in PATCH 01, this is not a problem any more.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/fan.c
drivers/acpi/processor_core.c
drivers/acpi/video.c
drivers/misc/intel_menlow.c

index c8e3cba..cf635cd 100644 (file)
@@ -260,24 +260,23 @@ static int acpi_fan_add(struct acpi_device *device)
                result = PTR_ERR(cdev);
                goto end;
        }
-       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;
-       }
+
+       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)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
+
+       result = sysfs_create_link(&cdev->device.kobj,
+                                  &device->dev.kobj,
+                                  "device");
+       if (result)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
 
        result = acpi_fan_add_fs(device);
        if (result)
index a825b43..ea5f628 100644 (file)
@@ -674,22 +674,21 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
                result = PTR_ERR(pr->cdev);
                goto end;
        }
-       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;
-       }
+
+       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)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
+       result = sysfs_create_link(&pr->cdev->device.kobj,
+                                  &device->dev.kobj,
+                                  "device");
+       if (result)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
 
        if (pr->flags.throttling) {
                printk(KERN_INFO PREFIX "%s [%s] (supports",
index 980a741..55c0956 100644 (file)
@@ -734,21 +734,19 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                if (IS_ERR(device->cdev))
                        return;
 
-               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");
-               }
+               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;
index 0c0bb30..3db83a2 100644 (file)
@@ -175,20 +175,15 @@ static int intel_menlow_memory_add(struct acpi_device *device)
                goto end;
        }
 
-       if (cdev) {
-               acpi_driver_data(device) = cdev;
-               result = sysfs_create_link(&device->dev.kobj,
-                                       &cdev->device.kobj, "thermal_cooling");
-               if (result)
-                       goto unregister;
-
-               result = sysfs_create_link(&cdev->device.kobj,
-                                       &device->dev.kobj, "device");
-               if (result) {
-                       sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
-                       goto unregister;
-               }
-       }
+       acpi_driver_data(device) = cdev;
+       result = sysfs_create_link(&device->dev.kobj,
+                               &cdev->device.kobj, "thermal_cooling");
+       if (result)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
+       result = sysfs_create_link(&cdev->device.kobj,
+                               &device->dev.kobj, "device");
+       if (result)
+               printk(KERN_ERR PREFIX "Create sysfs link\n");
 
  end:
        return result;