linux-kernel - [PATCH] bus: fsl-mc: fix error return code in fsl_mc_object

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Date:   Fri, 4 Dec 2020 16:02:47 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     Stuart Yoder <stuyoder@...il.com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Alexander Graf <agraf@...e.de>,
        "J. German Rivera" <German.Rivera@...escale.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Zhang Changzhong <zhangchangzhong@...wei.com>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] bus: fsl-mc: fix error return code in fsl_mc_object_allocate()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 197f4d6a4a00 ("staging: fsl-mc: fsl-mc object allocator driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/bus/fsl-mc/fsl-mc-allocator.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c
index e71a6f5..2d7c764 100644
--- a/drivers/bus/fsl-mc/fsl-mc-allocator.c
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -292,8 +292,10 @@ int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
 		goto error;
 
 	mc_adev = resource->data;
-	if (!mc_adev)
+	if (!mc_adev) {
+		error = -EINVAL;
 		goto error;
+	}
 
 	mc_adev->consumer_link = device_link_add(&mc_dev->dev,
 						 &mc_adev->dev,
-- 
2.9.5