diff options
author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-04-16 14:21:23 +0200 |
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committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-06-08 09:14:04 +0200 |
commit | bda3fdaa0f43fc7faaf07b4fc4f2bc4daea12451 (patch) | |
tree | 182799500446f3c2522439820da8d961b3901eda /drivers/gpu/drm/omapdrm | |
parent | 1c5aafa6eee2d5712f774676d407e5ab6dae9a1b (diff) | |
download | linux-bda3fdaa0f43fc7faaf07b4fc4f2bc4daea12451.tar.bz2 |
drm/omap: Use drm_gem_mmap_obj() to implement dma-buf mmap
The dma-buf mmap code was copied from the GEM mmap implementation.
Replace it with the new drm_gem_mmap_obj() function.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm')
-rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 32 |
1 files changed, 3 insertions, 29 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c index be7cd97a0db0..3256693de110 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c @@ -136,10 +136,6 @@ static void omap_gem_dmabuf_kunmap(struct dma_buf *buffer, kunmap(pages[page_num]); } -/* - * TODO maybe we can split up drm_gem_mmap to avoid duplicating - * some here.. or at least have a drm_dmabuf_mmap helper. - */ static int omap_gem_dmabuf_mmap(struct dma_buf *buffer, struct vm_area_struct *vma) { @@ -149,31 +145,9 @@ static int omap_gem_dmabuf_mmap(struct dma_buf *buffer, if (WARN_ON(!obj->filp)) return -EINVAL; - /* Check for valid size. */ - if (omap_gem_mmap_size(obj) < vma->vm_end - vma->vm_start) { - ret = -EINVAL; - goto out_unlock; - } - - if (!obj->dev->driver->gem_vm_ops) { - ret = -EINVAL; - goto out_unlock; - } - - vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; - vma->vm_ops = obj->dev->driver->gem_vm_ops; - vma->vm_private_data = obj; - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - - /* Take a ref for this mapping of the object, so that the fault - * handler can dereference the mmap offset's pointer to the object. - * This reference is cleaned up by the corresponding vm_close - * (which should happen whether the vma was created by this call, or - * by a vm_open due to mremap or partial unmap or whatever). - */ - vma->vm_ops->open(vma); - -out_unlock: + ret = drm_gem_mmap_obj(obj, omap_gem_mmap_size(obj), vma); + if (ret < 0) + return ret; return omap_gem_mmap_obj(obj, vma); } |