releases/5.10.75/drm-msm-dsi-fix-an-error-code-in-msm_dsi_modeset_init.patch

From 739b4e7756d3301dd673ca517afca46a5f635562 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 1 Oct 2021 15:33:08 +0300
Subject: drm/msm/dsi: Fix an error code in msm_dsi_modeset_init()

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 739b4e7756d3301dd673ca517afca46a5f635562 upstream.

Return an error code if msm_dsi_manager_validate_current_config().
Don't return success.

Fixes: 8b03ad30e314 ("drm/msm/dsi: Use one connector for dual DSI mode")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20211001123308.GF2283@kili
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/msm/dsi/dsi.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -208,8 +208,10 @@ int msm_dsi_modeset_init(struct msm_dsi
 		goto fail;
 	}
 
-	if (!msm_dsi_manager_validate_current_config(msm_dsi->id))
+	if (!msm_dsi_manager_validate_current_config(msm_dsi->id)) {
+		ret = -EINVAL;
 		goto fail;
+	}
 
 	msm_dsi->encoder = encoder;