linux-kernel - [PATCH] fpga: stratix10-soc: fix wrong of_node

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Date:   Mon,  3 Dec 2018 13:21:45 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Alan Tull <atull@...nel.org>, Moritz Fischer <mdf@...nel.org>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] fpga: stratix10-soc: fix wrong of_node_put() in init function

After finding a "firmware" dt node stratix10 tries to match it's
compatible string with it. To do so it's calling of_find_matching_node()
which already takes care of decreasing the refcount on the "firmware"
node. We are then incorrectly decreasing the refcount on that node
again.

This patch removes the unwarranted call to of_node_put().

Fixes: e7eef1d7633a ("fpga: add intel stratix10 soc fpga manager driver")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
 drivers/fpga/stratix10-soc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
index a1a09e04fab8..e75dbe583152 100644
--- a/drivers/fpga/stratix10-soc.c
+++ b/drivers/fpga/stratix10-soc.c
@@ -509,13 +509,11 @@ static int __init s10_init(void)
 
 	np = of_find_matching_node(fw_np, s10_of_match);
 	if (!np) {
-		of_node_put(fw_np);
 		return -ENODEV;
 	}
 
 	of_node_put(np);
 	ret = of_platform_populate(fw_np, s10_of_match, NULL, NULL);
-	of_node_put(fw_np);
 	if (ret)
 		return ret;
 
-- 
2.19.2