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drm/rockchip: Fix of_device_is_available check for iommu

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I think we want to fallback to non-iommu buffer if
iommu is disabled in dts.

Check for iommu->parent is meanless here.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Change-Id: I78ce028a9c1215f1e8f956916f775f07b30e67be
This commit is contained in:
Andy Yan 2021-06-26 18:07:16 +08:00 committed by Tao Huang
parent 778ce099dc
commit 186788893a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@ -462,7 +462,7 @@ static int rockchip_drm_platform_of_probe(struct device *dev)
}
iommu = of_parse_phandle(port->parent, "iommus", 0);
if (!iommu || !of_device_is_available(iommu->parent)) {
if (!iommu || !of_device_is_available(iommu)) {
DRM_DEV_DEBUG(dev,
"no iommu attached for %pOF, using non-iommu buffers\n",
port->parent);