linux-kernel - [PATCH -next] powerpc/44x/fsp2: add missing of_node

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Message-Id: <1635406102-88719-1-git-send-email-cuibixuan@linux.alibaba.com>
Date:   Thu, 28 Oct 2021 15:28:22 +0800
From:   Bixuan Cui <cuibixuan@...ux.alibaba.com>
To:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     cuibixuan@...ux.alibaba.com, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org, ivan@...ibm.com
Subject: [PATCH -next] powerpc/44x/fsp2: add missing of_node_put

Early exits from for_each_compatible_node() should decrement the
node reference counter.  Reported by Coccinelle:

./arch/powerpc/platforms/44x/fsp2.c:206:1-25: WARNING: Function
"for_each_compatible_node" should have of_node_put() before return
around line 218.

Fixes: 7813043e1bbc ("powerpc/44x/fsp2: Add irq error handlers")
Signed-off-by: Bixuan Cui <cuibixuan@...ux.alibaba.com>
---
 arch/powerpc/platforms/44x/fsp2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/44x/fsp2.c b/arch/powerpc/platforms/44x/fsp2.c
index b299e43..823397c 100644
--- a/arch/powerpc/platforms/44x/fsp2.c
+++ b/arch/powerpc/platforms/44x/fsp2.c
@@ -208,6 +208,7 @@ static void node_irq_request(const char *compat, irq_handler_t errirq_handler)
 		if (irq == NO_IRQ) {
 			pr_err("device tree node %pOFn is missing a interrupt",
 			      np);
+			of_node_put(np);
 			return;
 		}
 
@@ -215,6 +216,7 @@ static void node_irq_request(const char *compat, irq_handler_t errirq_handler)
 		if (rc) {
 			pr_err("fsp_of_probe: request_irq failed: np=%pOF rc=%d",
 			      np, rc);
+			of_node_put(np);
 			return;
 		}
 	}
-- 
1.8.3.1