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| author | Robert Richter <robert.richter@amd.com> | 2009-06-10 23:47:10 +0400 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2009-06-10 23:47:10 +0400 |
| commit | 0886751c5d8b19fcee2e65d34ae21c9111e652a9 (patch) | |
| tree | 015e8c2b3d44d46e9e8fccd016340c51bc876d3b /drivers/gpu/drm/drm_bufs.c | |
| parent | 7e4e0bd50e80df2fe5501f48f872448376cdd997 (diff) | |
| parent | 07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff) | |
| download | linux-0886751c5d8b19fcee2e65d34ae21c9111e652a9.tar.xz | |
Merge commit 'v2.6.30' into oprofile/master
Diffstat (limited to 'drivers/gpu/drm/drm_bufs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_bufs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index 6d80d17f1e96..0411d912d82a 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -170,6 +170,14 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, } DRM_DEBUG("offset = 0x%08llx, size = 0x%08lx, type = %d\n", (unsigned long long)map->offset, map->size, map->type); + + /* page-align _DRM_SHM maps. They are allocated here so there is no security + * hole created by that and it works around various broken drivers that use + * a non-aligned quantity to map the SAREA. --BenH + */ + if (map->type == _DRM_SHM) + map->size = PAGE_ALIGN(map->size); + if ((map->offset & (~(resource_size_t)PAGE_MASK)) || (map->size & (~PAGE_MASK))) { drm_free(map, sizeof(*map), DRM_MEM_MAPS); return -EINVAL; |