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Fri, 27 Mar 2026 05:27:58 -0700 (PDT) Received: from junjungu-PC.localdomain ([223.167.147.240]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c7673931621sm4543477a12.19.2026.03.27.05.27.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2026 05:27:58 -0700 (PDT) From: Felix Gu Date: Fri, 27 Mar 2026 20:27:54 +0800 Subject: [PATCH v2] iio: light: veml6070: Fix resource leak in probe error path 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: <20260327-veml6070-v2-1-10c3c67eb171@gmail.com> X-B4-Tracking: v=1; b=H4sIAMl3xmkC/23MSw7CIBSF4a00dywGUHk4ch+mg6Zc2puU0oAhm oa9ix07/E9Ovh0yJsIM926HhIUyxbWFPHUwzsM6ISPXGiSXil+kYgXDorjmTFyN1dZwo52Hdt8 Senof1LNvPVN+xfQ55CJ+6x+kCCbYzWnLpUStvHhMYaDlPMYAfa31C9/RRRagAAAA X-Change-ID: 20260326-veml6070-1489798087df To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Javier Carrasco Cc: Jonathan Cameron , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Andy Shevchenko , Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774614476; l=2236; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=Mj5HHb2stM9v+UnA4mQPvtFEf1IYBNgRKy+7R1fP3m8=; b=tYMZ5IC0B3UteYMjcnzwatvGOUjsyCtnSJ8t+kYeiom9JxgmoN3uwGyhldRJWC2ro7cBa8NcT /pJOvUpC645B8UAHNuxOXxnCLfzsJ2sAkKGrA3i0JjtQCE6B1EHHjrn X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= The driver calls i2c_new_dummy_device() to create a dummy device, then calls i2c_smbus_write_byte(). If i2c_smbus_write_byte() fails and returns, the cleanup via devm_add_action_or_reset() was never registered, so the dummy device leaks. Switch to devm_i2c_new_dummy_device() which registers cleanup atomically with device creation, eliminating the error-path window. Fixes: 7501bff87c3e ("iio: light: veml6070: add action for i2c_unregister_d= evice") Reviewed-by: Andy Shevchenko Signed-off-by: Felix Gu --- Changes in v2: - Rewrite the commit message. - Link to v1: https://lore.kernel.org/r/20260326-veml6070-v1-1-5d79022e76f1= @gmail.com --- drivers/iio/light/veml6070.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/iio/light/veml6070.c b/drivers/iio/light/veml6070.c index 6d4483c85f30..416a9520713f 100644 --- a/drivers/iio/light/veml6070.c +++ b/drivers/iio/light/veml6070.c @@ -247,13 +247,6 @@ static const struct iio_info veml6070_info =3D { .write_raw =3D veml6070_write_raw, }; =20 -static void veml6070_i2c_unreg(void *p) -{ - struct veml6070_data *data =3D p; - - i2c_unregister_device(data->client2); -} - static int veml6070_probe(struct i2c_client *client) { struct veml6070_data *data; @@ -283,7 +276,8 @@ static int veml6070_probe(struct i2c_client *client) if (ret < 0) return ret; =20 - data->client2 =3D i2c_new_dummy_device(client->adapter, VEML6070_ADDR_DAT= A_LSB); + data->client2 =3D devm_i2c_new_dummy_device(&client->dev, client->adapter, + VEML6070_ADDR_DATA_LSB); if (IS_ERR(data->client2)) return dev_err_probe(&client->dev, PTR_ERR(data->client2), "i2c device for second chip address failed\n"); @@ -294,10 +288,6 @@ static int veml6070_probe(struct i2c_client *client) if (ret < 0) return ret; =20 - ret =3D devm_add_action_or_reset(&client->dev, veml6070_i2c_unreg, data); - if (ret < 0) - return ret; - return devm_iio_device_register(&client->dev, indio_dev); } =20 --- base-commit: 66ba480978ce390e631e870b740a3406e3eb6b01 change-id: 20260326-veml6070-1489798087df Best regards, --=20 Felix Gu