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 john@metanate.com --- 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 7695c79..1e2d88b 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;