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Mon, 18 Aug 2025 02:27:49 -0700 (PDT) From: Salah Triki To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, Markus.Elfring@web.de, salah.triki@gmail.com Subject: [PATCH v4 1/3] iio: pressure: bmp280: Use IS_ERR() in bmp280_common_probe() Date: Mon, 18 Aug 2025 10:27:30 +0100 Message-ID: <20250818092740.545379-2-salah.triki@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250818092740.545379-1-salah.triki@gmail.com> References: <20250818092740.545379-1-salah.triki@gmail.com> 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 `devm_gpiod_get_optional()` may return non-NULL error pointer on failure. Check its return value using `IS_ERR()` and propagate the error if necessary. Fixes: df6e71256c84 ("iio: pressure: bmp280: Explicitly mark GPIO optional") Cc: David Lechner Cc: Jonathan Cameron Cc: Andy Shevchenko Cc: Nuno S=C3=A1 Cc: Markus Elfring Signed-off-by: Salah Triki Reviewed-by: David Lechner --- drivers/iio/pressure/bmp280-core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp2= 80-core.c index 74505c9ec1a0..6cdc8ed53520 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -3213,11 +3213,12 @@ int bmp280_common_probe(struct device *dev, =20 /* Bring chip out of reset if there is an assigned GPIO line */ gpiod =3D devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(gpiod)) + return dev_err_probe(dev, PTR_ERR(gpiod), "failed to get reset GPIO\n"); + /* Deassert the signal */ - if (gpiod) { - dev_info(dev, "release reset\n"); - gpiod_set_value(gpiod, 0); - } + dev_info(dev, "release reset\n"); + gpiod_set_value(gpiod, 0); 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Mon, 18 Aug 2025 02:27:53 -0700 (PDT) From: Salah Triki To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, Markus.Elfring@web.de, salah.triki@gmail.com Subject: [PATCH v4 2/3] iio: pressure: bmp280: Remove noisy dev_info() Date: Mon, 18 Aug 2025 10:27:31 +0100 Message-ID: <20250818092740.545379-3-salah.triki@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250818092740.545379-1-salah.triki@gmail.com> References: <20250818092740.545379-1-salah.triki@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" Remove `dev_info()` call as it was considered noisy and is not necessary for normal driver operation. Signed-off-by: Salah Triki Reviewed-by: David Lechner Reviewed-by: Andy Shevchenko --- drivers/iio/pressure/bmp280-core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp2= 80-core.c index 6cdc8ed53520..1f0852fc3414 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -3217,7 +3217,6 @@ int bmp280_common_probe(struct device *dev, return dev_err_probe(dev, PTR_ERR(gpiod), "failed to get reset GPIO\n"); =20 /* Deassert the signal */ - dev_info(dev, "release reset\n"); gpiod_set_value(gpiod, 0); =20 data->regmap =3D regmap; --=20 2.43.0 From nobody Sat Oct 4 09:39:49 2025 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (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 B96A730E842; Mon, 18 Aug 2025 09:27:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Mon, 18 Aug 2025 02:27:56 -0700 (PDT) Received: from localhost.localdomain ([165.51.41.61]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45a1c6be10esm173793365e9.3.2025.08.18.02.27.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Aug 2025 02:27:56 -0700 (PDT) From: Salah Triki To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, Markus.Elfring@web.de, salah.triki@gmail.com Subject: [PATCH v4 3/3] iio: pressure: bmp280: Use gpiod_set_value_cansleep() Date: Mon, 18 Aug 2025 10:27:32 +0100 Message-ID: <20250818092740.545379-4-salah.triki@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250818092740.545379-1-salah.triki@gmail.com> References: <20250818092740.545379-1-salah.triki@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" Switch to `gpiod_set_value_cansleep()`, which is safe to use in sleepable contexts like the driver probe function. Signed-off-by: Salah Triki Reviewed-by: David Lechner Reviewed-by: Andy Shevchenko --- drivers/iio/pressure/bmp280-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp2= 80-core.c index 1f0852fc3414..656f6189c84c 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -3217,7 +3217,7 @@ int bmp280_common_probe(struct device *dev, return dev_err_probe(dev, PTR_ERR(gpiod), "failed to get reset GPIO\n"); =20 /* Deassert the signal */ - gpiod_set_value(gpiod, 0); + gpiod_set_value_cansleep(gpiod, 0); =20 data->regmap =3D regmap; =20 --=20 2.43.0