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Subjectcatch calls of acpi_driver_data on pointer of wrong type

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

Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: Hannes Reinecke <hare@suse.de>

---
commit 76c9074075cd9208cf386f37ebd932a00557643a
tree 02589a15c23f430c7728560e4ba51077d41a6eff
parent d4a51ebfa2ffc3320d7eab269dc1ca84e86719f5
author Pavel <pavel@amd.ucw.cz> Wed, 10 Sep 2008 16:10:28 +0200
committer Pavel <pavel@amd.ucw.cz> Wed, 10 Sep 2008 16:10:28 +0200

include/acpi/acpi_bus.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index a5ac0bc..641656e 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -300,7 +300,7 @@ struct acpi_device {
enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
};

-#define acpi_driver_data(d) ((d)->driver_data)
+#define acpi_driver_data(d) ((void) (d == (struct acpi_device *) 0), 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)

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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