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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 1dfec413588..e22033ea261 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) {