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drm/rockchip: analogix_dp: Add a sanity check for rockchip_drm_psr_register()

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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
This commit is contained in:
Jeffy Chen 2018-01-10 17:23:43 +01:00 committed by Heiko Stuebner
parent 7fe201cd55
commit c8c0451421
1 changed files with 10 additions and 3 deletions
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13
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
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@ -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,