[PATCH 2/3] drm: Split drm_map and drm_local_map
Eric Anholt
eric at anholt.net
Tue Feb 3 07:57:27 EST 2009
On Mon, 2009-02-02 at 16:55 +1100, Benjamin Herrenschmidt wrote:
> Once upon a time, the DRM made the distinction between the drm_map
> data structure exchanged with user space and the drm_local_map used
> in the kernel.
>
> For some reasons, while the BSD port still has that "feature", the
> linux part abused drm_map for kernel internal usage as the local
> map only existed as a typedef of the struct drm_map.
>
> This patch fixes it by declaring struct drm_local_map separately
> (though its content is currently identical to the userspace variant),
> and changing the kernel code to only use that, except when it's a
> user<->kernel interface (ie. ioctl).
>
> This allows subsequent changes to the in-kernel format
>
> I've also replaced the use of drm_local_map_t with struct drm_local_map
> in a couple of places. Mostly by accident but they are the same (the
> former is a typedef of the later) and I have some remote plans and
> half finished patch to completely kill the drm_local_map_t typedef
> so I left those bits in.
>
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Thanks for taking on this mess!
Acked-by: Eric Anholt <eric at anholt.net>
--
Eric Anholt
eric at anholt.net eric.anholt at intel.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20090202/772a4e05/attachment.pgp>
More information about the Linuxppc-dev
mailing list