drm/exynos: fix imported dma-buf to be mapped

The imported dma-buf should be mapped by sub-system exporting it.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
[jy0922.shim: Be backported from upstream but not posted]

Change-Id: I59984d8111f058decf83afbda4d2df2e1edf305e

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index a1c573990294db41a5d3abf401add7f9224f5ea4..74f66904b39d3e76499fe767643c180653a98801 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -12,6 +12,7 @@
 #include <drm/drmP.h>
 #include <drm/drm_vma_manager.h>
 
+#include <linux/dma-buf.h>
 #include <linux/shmem_fs.h>
 #include <drm/exynos_drm.h>
 
@@ -662,5 +663,8 @@ int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
 
        obj = vma->vm_private_data;
 
+       if (obj->import_attach)
+               return dma_buf_mmap(obj->dma_buf, vma, 0);
+
        return exynos_drm_gem_mmap_obj(obj, vma);
 }