Almost all r128's private ioctls require that the CCE state has
already been initialised. However, most do not test that this has
been done, and will proceed to dereference a null pointer. This may
result in a security vulnerability, since some ioctls are
unprivileged.
This adds a macro for the common initialisation test and changes all
ioctl implementations that require prior initialisation to use that
macro.
Also, r128_do_init_cce() does not test that the CCE state has not
been initialised already. Repeated initialisation may lead to a crash
or resource leak. This adds that test.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
It hasn't been used in ages, and having the user tell your how much
memory is being freed at free time is a recipe for disaster even if it
was ever used.
Signed-off-by: Eric Anholt <eric@anholt.net>
Like the last patch but adds a macro to get at the irq value instead of
dereferencing pdev directly. Should make things easier for the BSD guys and
if we ever support non-PCI devices.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.
This restructures the drm along the lines of other kernel components.
It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ben Hutchings
Eric Anholt
Jesse Barnes
Dave Airlie