diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-05-29 10:04:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-05-29 10:04:24 +0100 |
| commit | 42f1d2e06a25628ae4ceaadccc4fa67c7787e2b4 (patch) | |
| tree | 8aac83e399de7ad13748a59853a0feea9ed2c5cb /drivers/gpu/drm/drm_bufs.c | |
| parent | 9af5324a070e0b2dcb6e22c89e17424eba245fcc (diff) | |
| parent | 77bbca138c64cb80259732db6f70e1668123f2a7 (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci into devel
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 6d80d17f1e9..0411d912d82 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; |