linux-kernel - [PATCH 4.9 02/14] can: grcan: grcan_probe(): remove extra of_node

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Message-Id: <20220711090535.593925777@linuxfoundation.org>
Date:   Mon, 11 Jul 2022 11:06:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Andreas Larsson <andreas@...sler.com>,
        Liang He <windhl@....com>,
        Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH 4.9 02/14] can: grcan: grcan_probe(): remove extra of_node_get()

From: Liang He <windhl@....com>

commit 562fed945ea482833667f85496eeda766d511386 upstream.

In grcan_probe(), of_find_node_by_path() has already increased the
refcount. There is no need to call of_node_get() again, so remove it.

Link: https://lore.kernel.org/all/20220619070257.4067022-1-windhl@126.com
Fixes: 1e93ed26acf0 ("can: grcan: grcan_probe(): fix broken system id check for errata workaround needs")
Cc: stable@...r.kernel.org # v5.18
Cc: Andreas Larsson <andreas@...sler.com>
Signed-off-by: Liang He <windhl@....com>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/can/grcan.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
@@ -1669,7 +1669,6 @@ static int grcan_probe(struct platform_d
 	 */
 	sysid_parent = of_find_node_by_path("/ambapp0");
 	if (sysid_parent) {
-		of_node_get(sysid_parent);
 		err = of_property_read_u32(sysid_parent, "systemid", &sysid);
 		if (!err && ((sysid & GRLIB_VERSION_MASK) >=
 			     GRCAN_TXBUG_SAFE_GRLIB_VERSION))