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Tue, 20 Jan 2026 06:26:56 -0800 (PST) Received: from junjungu-PC.localdomain ([188.253.124.89]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c5edf24dd20sm12323728a12.14.2026.01.20.06.26.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 06:26:56 -0800 (PST) From: Felix Gu X-Google-Original-From: Felix Gu Date: Tue, 20 Jan 2026 22:26:46 +0800 Subject: [PATCH] mmc: mmci: Fix device_node reference leak in of_get_dml_pipe_index() 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: <20260120-mmci_qcom_dml-v1-1-9b334479968e@qq.com> X-B4-Tracking: v=1; b=H4sIAKWQb2kC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDQ0Nz3dzc5Mz4wuT83PiU3BzdVEMzSxMD85RE86Q0JaCegqLUtMwKsHn RsbW1ABqG8tpfAAAA X-Change-ID: 20260117-mmci_qcom_dml-e169407da7bf To: Ulf Hansson , Linus Walleij , Srinivas Kandagatla , Stephen Boyd Cc: linux-arm-msm@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1768919211; l=990; i=gu_0233@qq.com; h=from:subject:message-id; bh=3SREWp5AQuhpQ8ZTpxLinHFSGdQevh/GQ+DofGlz+zg=; b=S2OhsVbilryU5HA4aYBMAty427/dcxFAd1FO2w1g88jwQwxwxY1YRiwpsuQkBKEY9xejdHBGm N5aSOKLz6yaA7hkuLew7GuRKxzzvrcrrXyf5JWdEdM4MPoMhnZRtdpb X-Developer-Key: i=gu_0233@qq.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= When calling of_parse_phandle_with_args(), the caller is responsible to call of_node_put() to release the reference of device node. In of_get_dml_pipe_index(), it does not release the reference. Fixes: 9cb15142d0e3 ("mmc: mmci: Add qcom dml support to the driver.") Signed-off-by: Felix Gu --- drivers/mmc/host/mmci_qcom_dml.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_= dml.c index 3da6112fbe39..67371389cc33 100644 --- a/drivers/mmc/host/mmci_qcom_dml.c +++ b/drivers/mmc/host/mmci_qcom_dml.c @@ -109,6 +109,7 @@ static int of_get_dml_pipe_index(struct device_node *np= , const char *name) &dma_spec)) return -ENODEV; =20 + of_node_put(dma_spec.np); if (dma_spec.args_count) return dma_spec.args[0]; =20 --- base-commit: 9b7977f9e39b7768c70c2aa497f04e7569fd3e00 change-id: 20260117-mmci_qcom_dml-e169407da7bf Best regards, --=20 Felix Gu