From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Wed, 10 Jan 2018 17:23:43 +0100
Subject: drm/rockchip: analogix_dp: Add a sanity check for
rockchip_drm_psr_register()
Git-commit: c8c045142125e7c054f66241d9f3b3151bb70daf
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
The rockchip_drm_psr_register() can fail, so add a sanity check for that.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
[moved psr_unregister reordering in unbind to separate patch]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180110162348.22765-4-thierry.escande@collabora.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--- 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 devic
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,