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drm/msm: no mmu is only error if not using vram carveout 

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2014-07-01 14:49:55 -04:00
parent 036c17082a
commit 1c4997fe41
1 changed files with 7 additions and 8 deletions
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15
drivers/gpu/drm/msm/msm_gem.c
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@ -278,24 +278,23 @@ int msm_gem_get_iova_locked(struct drm_gem_object *obj, int id,
uint32_t *iova)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
struct drm_device *dev = obj->dev;
int ret = 0;
if (!msm_obj->domain[id].iova) {
struct msm_drm_private *priv = obj->dev->dev_private;
struct msm_mmu *mmu = priv->mmus[id];
struct page **pages = get_pages(obj);
if (!mmu) {
dev_err(dev->dev, "null MMU pointer\n");
return -EINVAL;
}
if (IS_ERR(pages))
return PTR_ERR(pages);
if (iommu_present(&platform_bus_type)) {
uint32_t offset = (uint32_t)mmap_offset(obj);
struct msm_mmu *mmu = priv->mmus[id];
uint32_t offset;
if (WARN_ON(!mmu))
return -EINVAL;
offset = (uint32_t)mmap_offset(obj);
ret = mmu->funcs->map(mmu, offset, msm_obj->sgt,
obj->size, IOMMU_READ | IOMMU_WRITE);
msm_obj->domain[id].iova = offset;