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drm/omap: fix dmabuf mmap for dma_alloc'ed buffers

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[ Upstream commit 9fa1d7537242bd580ffa99c4725a0407096aad26 ]

omap_gem_dmabuf_mmap() returns an error (with a WARN) when called for a
buffer which is allocated with dma_alloc_*(). This prevents dmabuf mmap
from working on SoCs without DMM, e.g. AM4 and OMAP3.

I could not find any reason for omap_gem_dmabuf_mmap() rejecting such
buffers, and just removing the if() fixes the limitation.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomi Valkeinen 2017-02-28 10:11:45 +02:00 committed by Greg Kroah-Hartman
parent dbfba339c7
commit 7edb2d2d86
1 changed files with 0 additions and 3 deletions
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3
drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
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@ -142,9 +142,6 @@ static int omap_gem_dmabuf_mmap(struct dma_buf *buffer,
struct drm_gem_object *obj = buffer->priv;
int ret = 0;
if (WARN_ON(!obj->filp))
return -EINVAL;
ret = drm_gem_mmap_obj(obj, omap_gem_mmap_size(obj), vma);
if (ret < 0)
return ret;