drm/exynos: add dummy support for dmabuf-mmap

This patch adds a stub function for DMABUF mmap.
This allows to export a DMABUF.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
index 613bf8a5d9b268331779b0f60f43f52a047269de..ae13febe0eaa64e821adf2f5db306e5ebdd07186 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
@@ -163,6 +163,12 @@ static void exynos_gem_dmabuf_kunmap(struct dma_buf *dma_buf,
        /* TODO */
 }
 
+static int exynos_gem_dmabuf_mmap(struct dma_buf *dma_buf,
+       struct vm_area_struct *vma)
+{
+       return -ENOTTY;
+}
+
 static struct dma_buf_ops exynos_dmabuf_ops = {
        .map_dma_buf            = exynos_gem_map_dma_buf,
        .unmap_dma_buf          = exynos_gem_unmap_dma_buf,
@@ -170,6 +176,7 @@ static struct dma_buf_ops exynos_dmabuf_ops = {
        .kmap_atomic            = exynos_gem_dmabuf_kmap_atomic,
        .kunmap                 = exynos_gem_dmabuf_kunmap,
        .kunmap_atomic          = exynos_gem_dmabuf_kunmap_atomic,
+       .mmap                   = exynos_gem_dmabuf_mmap,
        .release                = exynos_dmabuf_release,
 };