linux-kernel - [PATCH] soc: amlogic: canvas: add missing put_device() call in meson_canvas

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Message-ID: <20201117011322.522477-1-yukuai3@huawei.com>
Date:   Tue, 17 Nov 2020 09:13:22 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <khilman@...libre.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <yukuai3@...wei.com>,
        <yi.zhang@...wei.com>, <zhangxiaoxu5@...wei.com>
Subject: [PATCH] soc: amlogic: canvas: add missing put_device() call in meson_canvas_get()

if of_find_device_by_node() succeed, meson_canvas_get() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: commit 382f8be04551 ("soc: amlogic: canvas: Fix meson_canvas_get when probe failed")
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/soc/amlogic/meson-canvas.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/amlogic/meson-canvas.c b/drivers/soc/amlogic/meson-canvas.c
index c655f5f92b12..d0329ad170d1 100644
--- a/drivers/soc/amlogic/meson-canvas.c
+++ b/drivers/soc/amlogic/meson-canvas.c
@@ -72,8 +72,10 @@ struct meson_canvas *meson_canvas_get(struct device *dev)
 	 * current state, this driver probe cannot return -EPROBE_DEFER
 	 */
 	canvas = dev_get_drvdata(&canvas_pdev->dev);
-	if (!canvas)
+	if (!canvas) {
+		put_device(&canvas_pdev->dev);
 		return ERR_PTR(-EINVAL);
+	}
 
 	return canvas;
 }
-- 
2.25.4