From 69b007968e7519cf1e44920f4578054c9e0fbdc3 Mon Sep 17 00:00:00 2001 From: John Keeping Date: Tue, 5 Apr 2016 14:50:32 +0100 Subject: [PATCH] drm/rockchip: don't leak iommu mapping arm_iommu_attach_device() takes its own reference to the mapping we give it. Since we do not keep a reference to the mapping ourselves, we must release it before returning. Also fix the error path, which fails to release the mapping if it has called arm_iommu_detach_device() since that clears archdata.mapping. Signed-off-by: John Keeping --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 7695c791ad95..1e2d88bdd9f7 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -218,6 +218,7 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags) if (ret) goto err_vblank_cleanup; + arm_iommu_release_mapping(mapping); return 0; err_vblank_cleanup: drm_vblank_cleanup(drm_dev); @@ -228,7 +229,7 @@ err_unbind: err_detach_device: arm_iommu_detach_device(dev); err_release_mapping: - arm_iommu_release_mapping(dev->archdata.mapping); + arm_iommu_release_mapping(mapping); err_config_cleanup: drm_mode_config_cleanup(drm_dev); drm_dev->dev_private = NULL; -- 2.20.1