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From:   Qinglang Miao <miaoqinglang@huawei.com>
To:     Wu Hao <hao.wu@intel.com>, Tom Rix <trix@redhat.com>,
        Moritz Fischer <mdf@kernel.org>
CC:     <linux-fpga@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        "Qinglang Miao" <miaoqinglang@huawei.com>
Subject: [PATCH] fpga: dfl: add missing platform_device_put in build_info_create_dev
Date:   Wed, 25 Nov 2020 14:50:30 +0800
Message-ID: <20201125065030.154074-1-miaoqinglang@huawei.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
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Precedence: bulk

platform_device_put is missing when it fails to set fdev->id. Set
a temp value to do sanity check.

Fixes: 543be3d8c999 ("fpga: add device feature list support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
---
 drivers/fpga/dfl.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index b450870b7..8958f0860 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -877,10 +877,13 @@ build_info_create_dev(struct build_feature_devs_info *binfo,
 
 	INIT_LIST_HEAD(&binfo->sub_features);
 
-	fdev->id = dfl_id_alloc(type, &fdev->dev);
-	if (fdev->id < 0)
-		return fdev->id;
+	int tmp_id = dfl_id_alloc(type, &fdev->dev);
+	if (tmp_id < 0) {
+		platform_device_put(fdev);
+		return tmp_id;
+	}
 
+	fdev->id = tmp_id;
 	fdev->dev.parent = &binfo->cdev->region->dev;
 	fdev->dev.devt = dfl_get_devt(dfl_devs[type].devt_type, fdev->id);
 
-- 
2.23.0