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([178.197.223.104]) by smtp.gmail.com with ESMTPSA id w24-20020a17090633d800b009935aba3a9dsm1864576eja.48.2023.07.18.23.16.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jul 2023 23:16:57 -0700 (PDT) From: Krzysztof Kozlowski To: Sudeep Holla , Cristian Marussi , Florian Fainelli , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , stable@vger.kernel.org Subject: [PATCH v2] firmware: arm_scmi: drop OF node reference in setup Date: Wed, 19 Jul 2023 08:16:52 +0200 Message-Id: <20230719061652.8850-1-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The OF node reference obtained from of_parse_phandle() should be dropped if node is not compatible with arm,scmi-shmem. Fixes: 507cd4d2c5eb ("firmware: arm_scmi: Add compatibility checks for shme= m node") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Cristian Marussi --- Changes in v2: 1. Correct also mailbox.c --- drivers/firmware/arm_scmi/mailbox.c | 4 +++- drivers/firmware/arm_scmi/smc.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scm= i/mailbox.c index 1efa5e9392c4..19246ed1f01f 100644 --- a/drivers/firmware/arm_scmi/mailbox.c +++ b/drivers/firmware/arm_scmi/mailbox.c @@ -166,8 +166,10 @@ static int mailbox_chan_setup(struct scmi_chan_info *c= info, struct device *dev, return -ENOMEM; =20 shmem =3D of_parse_phandle(cdev->of_node, "shmem", idx); - if (!of_device_is_compatible(shmem, "arm,scmi-shmem")) + if (!of_device_is_compatible(shmem, "arm,scmi-shmem")) { + of_node_put(shmem); return -ENXIO; + } =20 ret =3D of_address_to_resource(shmem, 0, &res); of_node_put(shmem); diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/sm= c.c index 621c37efe3ec..2d8c510fbf52 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -137,8 +137,10 @@ static int smc_chan_setup(struct scmi_chan_info *cinfo= , struct device *dev, return -ENOMEM; =20 np =3D of_parse_phandle(cdev->of_node, "shmem", 0); - if (!of_device_is_compatible(np, "arm,scmi-shmem")) + if (!of_device_is_compatible(np, "arm,scmi-shmem")) { + of_node_put(np); return -ENXIO; + } =20 ret =3D of_address_to_resource(np, 0, &res); of_node_put(np); --=20 2.34.1