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, 2 insertions, 2 deletions

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);