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Wed, 21 Jan 2026 10:39:24 -0800 (PST) Received: from junjungu-PC.localdomain ([188.253.124.88]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-81fa12b51fcsm15756893b3a.68.2026.01.21.10.39.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jan 2026 10:39:24 -0800 (PST) From: Felix Gu Date: Thu, 22 Jan 2026 02:39:17 +0800 Subject: [PATCH] bus: arm-cci: Fix a reference leak in __cci_ace_get_port() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260122-b4-arm-cci-v1-1-ad928c14ea24@gmail.com> X-B4-Tracking: v=1; b=H4sIAFQdcWkC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDQyMj3SQT3cSiXN3k5ExdMyNTI2MTAxOTJHMDJaCGgqLUtMwKsGHRsbW 1AKIdz6ZcAAAA X-Change-ID: 20260122-b4-arm-cci-625234044b70 To: linux-kernel@vger.kernel.org Cc: Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1769020762; l=1298; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=vG0ImoBWd+Tqbcsua7iGvDELEg/wZkN9LLqB7Bmbyxg=; b=n3Zf0lRy5c1RcY2S3PcmQYgoLd/23hE8AOciV9LzJhESF+nOUXTCCTNebXgOU7c2Nd346tI4E hLn6+lPNkREAfwIR3mBJaIb9JpZed9BiM3lUL5exVJJYod48qRhbDCC X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= In __cci_ace_get_port(), cci_portn is obtained via of_parse_phandle(), which increments the refcount. Use __free(device_node) scope-based cleanup to automatically release the reference when the variable goes out of scope. Signed-off-by: Felix Gu --- drivers/bus/arm-cci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index b8184a903583..766cccb840c1 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -15,6 +15,7 @@ */ =20 #include +#include #include #include #include @@ -162,9 +163,8 @@ static int __cci_ace_get_port(struct device_node *dn, i= nt type) { int i; bool ace_match; - struct device_node *cci_portn; - - cci_portn =3D of_parse_phandle(dn, "cci-control-port", 0); + struct device_node *cci_portn __free(device_node) =3D + of_parse_phandle(dn, "cci-control-port", 0); for (i =3D 0; i < nb_cci_ports; i++) { ace_match =3D ports[i].type =3D=3D type; if (ace_match && cci_portn =3D=3D ports[i].dn) --- base-commit: 053966c344dbd346e71305f530e91ea77916189f change-id: 20260122-b4-arm-cci-625234044b70 Best regards, --=20 Felix Gu