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Wed, 15 Apr 2026 22:16:40 -0700 (PDT) From: Sanjay Chitroda X-Google-Original-From: Sanjay Chitroda To: lucas.p.stankus@gmail.com, lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] iio: accel: adxl313_core: Use devm-managed mutex initialization Date: Thu, 16 Apr 2026 10:46:29 +0530 Message-Id: <20260416051631.551250-2-sanjayembedded@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260416051631.551250-1-sanjayembedded@gmail.com> References: <20260416051631.551250-1-sanjayembedded@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Sanjay Chitroda Use devm_mutex_init() to tie the mutex lifetime to the device and improve debugging when CONFIG_DEBUG_MUTEXES is enabled. Signed-off-by: Sanjay Chitroda Reviewed-by: Andy Shevchenko --- drivers/iio/accel/adxl313_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_c= ore.c index 83dcac17a042..2ca4ce90cd86 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -1243,7 +1243,9 @@ int adxl313_core_probe(struct device *dev, data->regmap =3D regmap; data->chip_info =3D chip_info; =20 - mutex_init(&data->lock); + ret =3D devm_mutex_init(dev, &data->lock); + if (ret) + return ret; =20 indio_dev->name =3D chip_info->name; indio_dev->info =3D &adxl313_info; --=20 2.34.1 From nobody Tue Jun 16 03:46:08 2026 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 86B5F342CA9 for ; Thu, 16 Apr 2026 05:16:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" From: Sanjay Chitroda Replace explicit mutex_lock() and mutex_unlock() with the guard() macro for cleaner and safer mutex handling. Signed-off-by: Sanjay Chitroda --- drivers/iio/accel/adxl313_core.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_c= ore.c index 2ca4ce90cd86..339570701083 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -356,19 +356,15 @@ static int adxl313_read_axis(struct adxl313_data *dat= a, { int ret; =20 - mutex_lock(&data->lock); + guard(mutex)(&data->lock); =20 ret =3D regmap_bulk_read(data->regmap, ADXL313_REG_DATA_AXIS(chan->address), &data->transf_buf, sizeof(data->transf_buf)); if (ret) - goto unlock_ret; - - ret =3D le16_to_cpu(data->transf_buf); + return ret; =20 -unlock_ret: - mutex_unlock(&data->lock); - return ret; + return le16_to_cpu(data->transf_buf); } =20 static int adxl313_read_freq_avail(struct iio_dev *indio_dev, --=20 2.34.1 From nobody Tue Jun 16 03:46:08 2026 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8E609340298 for ; 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Wed, 15 Apr 2026 22:16:48 -0700 (PDT) Received: from hu-ckantibh-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f67476a5fsm3948364b3a.60.2026.04.15.22.16.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Apr 2026 22:16:47 -0700 (PDT) From: Sanjay Chitroda X-Google-Original-From: Sanjay Chitroda To: lucas.p.stankus@gmail.com, lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/3] iio: accel: adxl313: Use dev_err_probe Date: Thu, 16 Apr 2026 10:46:31 +0530 Message-Id: <20260416051631.551250-4-sanjayembedded@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260416051631.551250-1-sanjayembedded@gmail.com> References: <20260416051631.551250-1-sanjayembedded@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Sanjay Chitroda dev_err_probe() makes error code handling simpler and handle deferred probe nicely (avoid spamming logs). Signed-off-by: Sanjay Chitroda --- drivers/iio/accel/adxl313_core.c | 6 ++---- drivers/iio/accel/adxl313_i2c.c | 8 +++----- drivers/iio/accel/adxl313_spi.c | 8 +++----- 3 files changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_c= ore.c index 339570701083..1e9df5702de4 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -1251,10 +1251,8 @@ int adxl313_core_probe(struct device *dev, indio_dev->available_scan_masks =3D adxl313_scan_masks; =20 ret =3D adxl313_setup(dev, data, setup); - if (ret) { - dev_err(dev, "ADXL313 setup failed\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "ADXL313 setup failed\n"); =20 int_line =3D adxl313_get_int_type(dev, &irq); if (int_line =3D=3D ADXL313_INT_NONE) { diff --git a/drivers/iio/accel/adxl313_i2c.c b/drivers/iio/accel/adxl313_i2= c.c index b67ff0b4dc54..896d6ee8a3ef 100644 --- a/drivers/iio/accel/adxl313_i2c.c +++ b/drivers/iio/accel/adxl313_i2c.c @@ -75,11 +75,9 @@ static int adxl313_i2c_probe(struct i2c_client *client) =20 regmap =3D devm_regmap_init_i2c(client, &adxl31x_i2c_regmap_config[chip_data->type]); - if (IS_ERR(regmap)) { - dev_err(&client->dev, "Error initializing i2c regmap: %ld\n", - PTR_ERR(regmap)); - return PTR_ERR(regmap); - } + if (IS_ERR(regmap)) + return dev_err_probe(&client->dev, PTR_ERR(regmap), + "Error initializing i2c regmap\n"); =20 return adxl313_core_probe(&client->dev, regmap, chip_data, NULL); } diff --git a/drivers/iio/accel/adxl313_spi.c b/drivers/iio/accel/adxl313_sp= i.c index dedb0885c277..6a0deea2209f 100644 --- a/drivers/iio/accel/adxl313_spi.c +++ b/drivers/iio/accel/adxl313_spi.c @@ -83,11 +83,9 @@ static int adxl313_spi_probe(struct spi_device *spi) regmap =3D devm_regmap_init_spi(spi, &adxl31x_spi_regmap_config[chip_data->type]); =20 - if (IS_ERR(regmap)) { - dev_err(&spi->dev, "Error initializing spi regmap: %ld\n", - PTR_ERR(regmap)); - return PTR_ERR(regmap); - } + if (IS_ERR(regmap)) + return dev_err_probe(&spi->dev, PTR_ERR(regmap), + "Error initializing spi regmap\n"); =20 return adxl313_core_probe(&spi->dev, regmap, chip_data, &adxl313_spi_setup); --=20 2.34.1