diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_gem.c | 37 |
1 files changed, 13 insertions, 24 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 52187aec8692..99227246ce82 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -99,34 +99,23 @@ static int exynos_drm_gem_map_buf(struct drm_gem_object *obj, unsigned long pfn; int i; - if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { - if (!buf->sgt) - return -EINTR; - - sgl = buf->sgt->sgl; - for_each_sg(buf->sgt->sgl, sgl, buf->sgt->nents, i) { - if (!sgl) { - DRM_ERROR("invalid SG table\n"); - return -EINTR; - } - if (page_offset < (sgl->length >> PAGE_SHIFT)) - break; - page_offset -= (sgl->length >> PAGE_SHIFT); - } - - if (i >= buf->sgt->nents) { - DRM_ERROR("invalid page offset\n"); - return -EINVAL; - } + if (!buf->sgt) + return -EINTR; - pfn = __phys_to_pfn(sg_phys(sgl)) + page_offset; - } else { - if (!buf->pages) - return -EINTR; + if (page_offset >= (buf->size >> PAGE_SHIFT)) { + DRM_ERROR("invalid page offset\n"); + return -EINVAL; + } - pfn = page_to_pfn(buf->pages[0]) + page_offset; + sgl = buf->sgt->sgl; + for_each_sg(buf->sgt->sgl, sgl, buf->sgt->nents, i) { + if (page_offset < (sgl->length >> PAGE_SHIFT)) + break; + page_offset -= (sgl->length >> PAGE_SHIFT); } + pfn = __phys_to_pfn(sg_phys(sgl)) + page_offset; + return vm_insert_mixed(vma, f_vaddr, pfn); } |