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Mon, 19 Jan 2026 14:37:30 +0000 (UTC) From: Rodrigo Alencar via B4 Relay Date: Mon, 19 Jan 2026 14:36:59 +0000 Subject: [PATCH 5/7] iio: amplifiers: ad8366: use cleanup.h mutex guard 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: <20260119-iio-ad8366-update-v1-5-8044e23e964a@analog.com> References: <20260119-iio-ad8366-update-v1-0-8044e23e964a@analog.com> In-Reply-To: <20260119-iio-ad8366-update-v1-0-8044e23e964a@analog.com> To: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , David Lechner , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rodrigo Alencar X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1768833448; l=1898; i=rodrigo.alencar@analog.com; s=default; h=from:subject:message-id; bh=YAYuOUTweoFKOoWx+os6umUAifv0dwftAt5d8TlJqJM=; b=XO9ZOAiOXRraSPnBYDMJ92vscFlv6RXnUB1srGcO5GKbPh/9atl/9cKD5LVevvB4MJtc5/IhN zfcLQaRgzWQB153uBkHdfmqCo/RgQq41EGJrnzH+zdwQcjWIwq29kC5 X-Developer-Key: i=rodrigo.alencar@analog.com; a=ed25519; pk=ULeHbgU/OYh/PG/4anHDfLgldFItQHAhOktYRVLMFRo= X-Endpoint-Received: by B4 Relay for rodrigo.alencar@analog.com/default with auth_id=561 X-Original-From: Rodrigo Alencar Reply-To: rodrigo.alencar@analog.com From: Rodrigo Alencar Changes related to mutex handling: - use guard() from cleanup for mutex locking - replace mutex_init() for devm_mutex_init() Signed-off-by: Rodrigo Alencar --- drivers/iio/amplifiers/ad8366.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad836= 6.c index 160a8ab0c2ee..26856cb4216e 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -17,6 +17,7 @@ * Copyright 2012-2026 Analog Devices Inc. */ =20 +#include #include #include #include @@ -164,7 +165,8 @@ static int ad8366_read_raw(struct iio_dev *indio_dev, int ret; int code, gain =3D 0; =20 - mutex_lock(&st->lock); + guard(mutex)(&st->lock); + switch (m) { case IIO_CHAN_INFO_HARDWAREGAIN: code =3D st->ch[chan->channel]; @@ -210,7 +212,6 @@ static int ad8366_read_raw(struct iio_dev *indio_dev, default: ret =3D -EINVAL; } - mutex_unlock(&st->lock); =20 return ret; }; @@ -267,7 +268,8 @@ static int ad8366_write_raw(struct iio_dev *indio_dev, break; } =20 - mutex_lock(&st->lock); + guard(mutex)(&st->lock); + switch (mask) { case IIO_CHAN_INFO_HARDWAREGAIN: st->ch[chan->channel] =3D code; @@ -276,7 +278,6 @@ static int ad8366_write_raw(struct iio_dev *indio_dev, default: ret =3D -EINVAL; } - mutex_unlock(&st->lock); =20 return ret; } @@ -336,10 +337,13 @@ static int ad8366_probe(struct spi_device *spi) } =20 spi_set_drvdata(spi, indio_dev); - mutex_init(&st->lock); st->spi =3D spi; st->type =3D spi_get_device_id(spi)->driver_data; =20 + ret =3D devm_mutex_init(&spi->dev, &st->lock); + if (ret) + return ret; + switch (st->type) { case ID_AD8366: indio_dev->channels =3D ad8366_channels; --=20 2.43.0