Commit e1202c7a authored by Andy Yan's avatar Andy Yan Committed by Heiko Stuebner
Browse files

drm/rockchip: Check iommu itself instead of it's parent for device_is_available 



When iommu itself is disabled in dts, we should
fallback to non-iommu buffer, check iommu parent
is meanless here.

Signed-off-by: default avatarAndy Yan <andy.yan@rock-chips.com>
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210627084737.309163-1-andy.yan@rock-chips.com
parent adfeef93

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -374,7 +374,7 @@ 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);