1 From a1fbf2a0424262c6f2d974aa5a6e71d47288e1a8 Mon Sep 17 00:00:00 2001
2 From: Eric Anholt <eric@anholt.net>
3 Date: Wed, 19 Nov 2014 12:06:38 -0800
4 Subject: [PATCH] drm: Put an optional field in the driver struct for GEM obj
7 This allows a driver to derive from the CMA object without copying all
10 Signed-off-by: Eric Anholt <eric@anholt.net>
12 drivers/gpu/drm/drm_gem_cma_helper.c | 5 ++++-
13 include/drm/drmP.h | 1 +
14 2 files changed, 5 insertions(+), 1 deletion(-)
16 --- a/drivers/gpu/drm/drm_gem_cma_helper.c
17 +++ b/drivers/gpu/drm/drm_gem_cma_helper.c
18 @@ -58,8 +58,11 @@ __drm_gem_cma_create(struct drm_device *
19 struct drm_gem_cma_object *cma_obj;
20 struct drm_gem_object *gem_obj;
22 + size_t obj_size = (drm->driver->gem_obj_size ?
23 + drm->driver->gem_obj_size :
26 - cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL);
27 + cma_obj = kzalloc(obj_size, GFP_KERNEL);
29 return ERR_PTR(-ENOMEM);
31 --- a/include/drm/drmP.h
32 +++ b/include/drm/drmP.h
33 @@ -639,6 +639,7 @@ struct drm_driver {
37 + size_t gem_obj_size;
38 const struct drm_ioctl_desc *ioctls;
40 const struct file_operations *fops;