linux-kernel - [PATCH] ata: pata_macio: add of_node

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Date:   Wed, 21 Nov 2018 08:04:39 -0500
From:   Yangtao Li <tiny.windzz@...il.com>
To:     b.zolnierkie@...sung.com, axboe@...nel.dk
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH] ata: pata_macio: add of_node_put()

of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.
bl_idle_init() doesn't do that, so fix it.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/ata/pata_macio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 9588e685d994..8cc9c429ad95 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -483,6 +483,8 @@ static int pata_macio_cable_detect(struct ata_port *ap)
 		struct device_node *root = of_find_node_by_path("/");
 		const char *model = of_get_property(root, "model", NULL);
 
+		of_node_put(root);
+
 		if (cable && !strncmp(cable, "80-", 3)) {
 			/* Some drives fail to detect 80c cable in PowerBook
 			 * These machine use proprietary short IDE cable
-- 
2.17.0