From: Jeffy Chen Date: Wed, 10 Jan 2018 16:23:43 +0000 (+0100) Subject: drm/rockchip: analogix_dp: Add a sanity check for rockchip_drm_psr_register() X-Git-Tag: v5.15~9183^2~16^2~54 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=c8c045142125e7c054f66241d9f3b3151bb70daf;p=mirror_ubuntu-kernels.git drm/rockchip: analogix_dp: Add a sanity check for rockchip_drm_psr_register() The rockchip_drm_psr_register() can fail, so add a sanity check for that. Signed-off-by: Jeffy Chen Signed-off-by: Thierry Escande [moved psr_unregister reordering in unbind to separate patch] Signed-off-by: Heiko Stuebner Link: https://patchwork.freedesktop.org/patch/msgid/20180110162348.22765-4-thierry.escande@collabora.com --- diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 37250ab63bd7..ea47573f5b75 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -354,15 +354,22 @@ static int rockchip_dp_bind(struct device *dev, struct device *master, dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE; INIT_WORK(&dp->psr_work, analogix_dp_psr_work); - rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set); + ret = rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set); + if (ret < 0) + goto err_cleanup_encoder; dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data); if (IS_ERR(dp->adp)) { - dp->encoder.funcs->destroy(&dp->encoder); - return PTR_ERR(dp->adp); + ret = PTR_ERR(dp->adp); + goto err_unreg_psr; } return 0; +err_unreg_psr: + rockchip_drm_psr_unregister(&dp->encoder); +err_cleanup_encoder: + dp->encoder.funcs->destroy(&dp->encoder); + return ret; } static void rockchip_dp_unbind(struct device *dev, struct device *master,