ACPI: catch calls of acpi_driver_data on pointer of wrong type

Catch attempts to use of acpi_driver_data on pointers of wrong type.

akpm: rewritten to use proper C typechecking and remove the
"function"-used-as-lvalue thing.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

23 files changed, 34 insertions, 30 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 831883b7d6c9..8b6a84a43b15 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -269,7 +269,7 @@ static int acpi_ac_add(struct acpi_device *device)
         ac->device = device;
         strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_AC_CLASS);
-        acpi_driver_data(device) = ac;
+        device->driver_data = ac;
 
         result = acpi_ac_get_state(ac);
         if (result)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 5f1127ad5a95..afd955fc0dc2 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -403,7 +403,7 @@ static int acpi_memory_device_add(struct acpi_device *device)
         mem_device->device = device;
         sprintf(acpi_device_name(device), "%s", ACPI_MEMORY_DEVICE_NAME);
         sprintf(acpi_device_class(device), "%s", ACPI_MEMORY_DEVICE_CLASS);
-        acpi_driver_data(device) = mem_device;
+        device->driver_data = mem_device;
 
         /* Get the range from the _CRS */
         result = acpi_memory_get_device_resources(mem_device);
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index d3d0886d637f..91571fc0f17d 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -1321,7 +1321,7 @@ static int asus_hotk_add(struct acpi_device *device)
         hotk->handle = device->handle;
         strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_HOTK_CLASS);
-        acpi_driver_data(device) = hotk;
+        device->driver_data = hotk;
         hotk->device = device;
 
         result = asus_hotk_check();
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b1c723f9f58d..de8046933bce 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -804,7 +804,7 @@ static int acpi_battery_add(struct acpi_device *device)
         battery->device = device;
         strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
-        acpi_driver_data(device) = battery;
+        device->driver_data = battery;
         mutex_init(&battery->lock);
         acpi_battery_update(battery);
 #ifdef CONFIG_ACPI_PROCFS_POWER
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 1dfec413588c..e22033ea2614 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -384,7 +384,7 @@ static int acpi_button_add(struct acpi_device *device)
                 return -ENOMEM;
 
         button->device = device;
-        acpi_driver_data(device) = button;
+        device->driver_data = button;
 
         button->input = input = input_allocate_device();
         if (!input) {
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 3c25ec7a1871..03ea8478e393 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -108,7 +108,7 @@ static int acpi_container_add(struct acpi_device *device)
         container->handle = device->handle;
         strcpy(acpi_device_name(device), ACPI_CONTAINER_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_CONTAINER_CLASS);
-        acpi_driver_data(device) = container;
+        device->driver_data = container;
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device <%s> bid <%s>\n",
                           acpi_device_name(device), acpi_device_bid(device)));
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 13593f9f2197..5741d99d6034 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -788,7 +788,7 @@ static int acpi_ec_add(struct acpi_device *device)
 
         if (!first_ec)
                 first_ec = ec;
-        acpi_driver_data(device) = ec;
+        device->driver_data = ec;
         acpi_ec_add_fs(device);
         pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
                           ec->gpe, ec->command_addr, ec->data_addr);
@@ -813,7 +813,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
         }
         mutex_unlock(&ec->lock);
         acpi_ec_remove_fs(device);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
         if (ec == first_ec)
                 first_ec = NULL;
         kfree(ec);
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 2655bc1b4eeb..e603e4070702 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -265,7 +265,7 @@ static int acpi_fan_add(struct acpi_device *device)
 
         dev_info(&device->dev, "registered as cooling_device%d\n", cdev->id);
 
-        acpi_driver_data(device) = cdev;
+        device->driver_data = cdev;
         result = sysfs_create_link(&device->dev.kobj,
                                    &cdev->device.kobj,
                                    "thermal_cooling");
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index cf47805a7448..54cd77a0a78e 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -737,7 +737,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
         link->device = device;
         strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
-        acpi_driver_data(device) = link;
+        device->driver_data = link;
 
         mutex_lock(&acpi_link_lock);
         result = acpi_pci_link_get_possible(link);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index c3fed31166b5..add1a19bbbfe 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -206,7 +206,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
         root->device = device;
         strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
-        acpi_driver_data(device) = root;
+        device->driver_data = root;
 
         device->ops.bind = acpi_pci_bind;
 
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 4ab21cb1c8c7..1bef9429189b 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -657,7 +657,7 @@ static int acpi_power_add(struct acpi_device *device)
         strcpy(resource->name, device->pnp.bus_id);
         strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_POWER_CLASS);
-        acpi_driver_data(device) = resource;
+        device->driver_data = resource;
 
         /* Evalute the object to get the system level and resource order. */
         status = acpi_evaluate_object(device->handle, NULL, NULL, &buffer);
@@ -733,7 +733,7 @@ static int acpi_power_resume(struct acpi_device *device)
         if (!device || !acpi_driver_data(device))
                 return -EINVAL;
 
-        resource = (struct acpi_power_resource *)acpi_driver_data(device);
+        resource = acpi_driver_data(device);
 
         result = acpi_power_get_state(resource, &state);
         if (result)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ee68ac54c0d4..289461649196 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -818,7 +818,7 @@ static int acpi_processor_add(struct acpi_device *device)
         pr->handle = device->handle;
         strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
-        acpi_driver_data(device) = pr;
+        device->driver_data = pr;
 
         return 0;
 }
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 10a36512647c..d0033250b5a9 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -931,7 +931,7 @@ static int acpi_sbs_add(struct acpi_device *device)
         sbs->device = device;
         strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
-        acpi_driver_data(device) = sbs;
+        device->driver_data = sbs;
 
         result = acpi_charger_add(sbs);
         if (result)
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index a4e3767b8c64..001d9143a2cb 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -282,7 +282,7 @@ static int acpi_smbus_hc_add(struct acpi_device *device)
         hc->ec = acpi_driver_data(device->parent);
         hc->offset = (val >> 8) & 0xff;
         hc->query_bit = val & 0xff;
-        acpi_driver_data(device) = hc;
+        device->driver_data = hc;
 
         acpi_ec_add_query_handler(hc->ec, hc->query_bit, NULL, smbus_alarm, hc);
         printk(KERN_INFO PREFIX "SBS HC: EC = 0x%p, offset = 0x%0x, query_bit = 0x%0x\n",
@@ -303,7 +303,7 @@ static int acpi_smbus_hc_remove(struct acpi_device *device, int type)
         hc = acpi_driver_data(device);
         acpi_ec_remove_query_handler(hc->ec, hc->query_bit);
         kfree(hc);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
         return 0;
 }
 
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index e7b8853c310b..b88536ab040a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -384,7 +384,7 @@ static int acpi_device_remove(struct device * dev)
                         acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
         }
         acpi_dev->driver = NULL;
-        acpi_driver_data(acpi_dev) = NULL;
+        acpi_dev->driver_data = NULL;
 
         put_device(dev);
         return 0;
@@ -537,7 +537,7 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
         result = driver->ops.add(device);
         if (result) {
                 device->driver = NULL;
-                acpi_driver_data(device) = NULL;
+                device->driver_data = NULL;
                 return result;
         }
 
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 912703691d36..e052a75c29ce 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -1647,7 +1647,7 @@ static int acpi_thermal_add(struct acpi_device *device)
         strcpy(tz->name, device->pnp.bus_id);
         strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
-        acpi_driver_data(device) = tz;
+        device->driver_data = tz;
         mutex_init(&tz->lock);
 
 
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index e8a51a1700f7..85c6554bcb4c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1491,7 +1491,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
 
                 strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
                 strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
-                acpi_driver_data(device) = data;
+                device->driver_data = data;
 
                 data->device_id = device_id;
                 data->video = video;
@@ -1982,7 +1982,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
         video->device = device;
         strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
         strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
-        acpi_driver_data(device) = video;
+        device->driver_data = video;
 
         acpi_video_bus_find_cap(video);
         error = acpi_video_bus_check(video);
@@ -2058,7 +2058,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
         acpi_video_bus_remove_fs(device);
  err_free_video:
         kfree(video);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
 
         return error;
 }
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 7c6dfd03de9f..de82f2f5a813 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -996,7 +996,7 @@ static int asus_hotk_add(struct acpi_device *device)
         hotk->handle = device->handle;
         strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
         strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
-        acpi_driver_data(device) = hotk;
+        device->driver_data = hotk;
         hotk->device = device;
 
         result = asus_hotk_check();
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index 1ee8501e90f1..c1247056116c 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -411,7 +411,7 @@ static int eeepc_hotk_add(struct acpi_device *device)
         ehotk->handle = device->handle;
         strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
         strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
-        acpi_driver_data(device) = ehotk;
+        device->driver_data = ehotk;
         ehotk->device = device;
         result = eeepc_hotk_check();
         if (result)
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index 3e56203e4947..7b69cfb7de5d 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -490,7 +490,7 @@ static int acpi_fujitsu_add(struct acpi_device *device)
         fujitsu->acpi_handle = device->handle;
         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
-        acpi_driver_data(device) = fujitsu;
+        device->driver_data = fujitsu;
 
         status = acpi_install_notify_handler(device->handle,
                                              ACPI_DEVICE_NOTIFY,
@@ -703,7 +703,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
         sprintf(acpi_device_name(device), "%s",
                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
-        acpi_driver_data(device) = fujitsu_hotkey;
+        device->driver_data = fujitsu_hotkey;
 
         status = acpi_install_notify_handler(device->handle,
                                              ACPI_DEVICE_NOTIFY,
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index 80a136352408..cd3ea7faa5b6 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -175,7 +175,7 @@ static int intel_menlow_memory_add(struct acpi_device *device)
                 goto end;
         }
 
-        acpi_driver_data(device) = cdev;
+        device->driver_data = cdev;
         result = sysfs_create_link(&device->dev.kobj,
                                 &cdev->device.kobj, "thermal_cooling");
         if (result)
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 6b9300779a43..62aebaa85913 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -543,7 +543,7 @@ static int __init setup_acpi_notify(struct ibm_struct *ibm)
                 return -ENODEV;
         }
 
-        acpi_driver_data(ibm->acpi->device) = ibm;
+        ibm->acpi->device->driver_data = ibm;
         sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
                 TPACPI_ACPI_EVENT_PREFIX,
                 ibm->name);
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index a5ac0bc7f52e..47682465f1f5 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -300,7 +300,11 @@ struct acpi_device {
         enum acpi_bus_removal_type removal_type;        /* indicate for different removal type */
 };
 
-#define acpi_driver_data(d)     ((d)->driver_data)
+static inline void *acpi_driver_data(struct acpi_device *d)
+{
+        return d->driver_data;
+}
+
 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)