linux-kernel - [PATCH] arm: mach-at91: add missing of_node

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Date:   Mon, 13 Dec 2021 01:41:56 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Russell King <linux@...linux.org.uk>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] arm: mach-at91: add missing of_node_put

From: Wang Qing <wangqing@...o.com>

Fix following coccicheck warning:
WARNING: Function "for_each_matching_node_and_match" 
should have of_node_put() before return.

Early exits from for_each_matching_node_and_match should decrement the
node reference counter.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 arch/arm/mach-at91/pm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 8711d68..ca313fe
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -644,6 +644,7 @@ static __init int at91_dt_ramc(bool phy_mandatory)
 		soc_pm.data.ramc[idx] = of_iomap(np, 0);
 		if (!soc_pm.data.ramc[idx]) {
 			pr_err("unable to map ramc[%d] cpu registers\n", idx);
+			of_node_put(np);
 			ret = -ENOMEM;
 			goto unmap_ramc;
 		}
@@ -669,6 +670,7 @@ static __init int at91_dt_ramc(bool phy_mandatory)
 		soc_pm.data.ramc_phy = of_iomap(np, 0);
 		if (!soc_pm.data.ramc_phy) {
 			pr_err("unable to map ramc phy cpu registers\n");
+			of_node_put(np);
 			ret = -ENOMEM;
 			goto unmap_ramc;
 		}
-- 
2.7.4