diff options
| author | Haixia Shi <hshi@chromium.org> | 2014-11-25 12:04:02 -0800 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-11-26 10:03:00 +1000 |
| commit | 4bc158e0be4b03b320db9f3b91a84c898ae928a0 (patch) | |
| tree | 20b69afd73ae291cd077bfac5b19b8521b773a4c /drivers/gpu | |
| parent | 0a3d775fb2c951d1bd3f5f916eee55face0eaada (diff) | |
| download | linux-rt-4bc158e0be4b03b320db9f3b91a84c898ae928a0.tar.gz | |
drm/udl: handle page mapping in dmabuf export.
Fixes dmabuf export failure with -E_NOMEM when the page is not mapped.
Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_dmabuf.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_gem.c | 4 |
3 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c index 1d85c3a9151d..2425b76dc44c 100644 --- a/drivers/gpu/drm/udl/udl_dmabuf.c +++ b/drivers/gpu/drm/udl/udl_dmabuf.c @@ -90,8 +90,11 @@ static struct sg_table *udl_map_dma_buf(struct dma_buf_attachment *attach, return &udl_attach->sgt; if (!obj->pages) { - DRM_ERROR("pages is null.\n"); - return ERR_PTR(-ENOMEM); + ret = udl_gem_get_pages(obj); + if (ret) { + DRM_ERROR("failed to map pages.\n"); + return ERR_PTR(ret); + } } page_count = obj->base.size / PAGE_SIZE; diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 1b132d779621..80adbac82bde 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -129,6 +129,8 @@ struct dma_buf *udl_gem_prime_export(struct drm_device *dev, struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf); +int udl_gem_get_pages(struct udl_gem_object *obj); +void udl_gem_put_pages(struct udl_gem_object *obj); int udl_gem_vmap(struct udl_gem_object *obj); void udl_gem_vunmap(struct udl_gem_object *obj); int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c index cd3482de5cab..2a0a784ab6ee 100644 --- a/drivers/gpu/drm/udl/udl_gem.c +++ b/drivers/gpu/drm/udl/udl_gem.c @@ -127,7 +127,7 @@ int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } } -static int udl_gem_get_pages(struct udl_gem_object *obj) +int udl_gem_get_pages(struct udl_gem_object *obj) { struct page **pages; @@ -143,7 +143,7 @@ static int udl_gem_get_pages(struct udl_gem_object *obj) return 0; } -static void udl_gem_put_pages(struct udl_gem_object *obj) +void udl_gem_put_pages(struct udl_gem_object *obj) { if (obj->base.import_attach) { drm_free_large(obj->pages); |