linux-kernel - [PATCH 5.4 63/69] drm/msm/dsi: Fix an error code in msm_dsi_modeset

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Message-Id: <20211018132331.556538903@linuxfoundation.org>
Date:   Mon, 18 Oct 2021 15:25:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Rob Clark <robdclark@...omium.org>
Subject: [PATCH 5.4 63/69] drm/msm/dsi: Fix an error code in msm_dsi_modeset_init()

From: Dan Carpenter <dan.carpenter@...cle.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@...cle.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Link: https://lore.kernel.org/r/20211001123308.GF2283@kili
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Rob Clark <robdclark@...omium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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
@@ -206,8 +206,10 @@ 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;