linux-kernel - [PATCH v2] iio: pressure: bmp280: Use IS_ERR() in bmp280_common

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Message-ID: <aJQOmQKO219rS8ZN@pc>
Date: Thu, 7 Aug 2025 03:25:29 +0100
From: Salah Triki <salah.triki@...il.com>
To: Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: salah.triki@...il.com
Subject: [PATCH v2] iio: pressure: bmp280: Use IS_ERR() in
 bmp280_common_probe()

`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.

`dev_info()` has been dropped as it was considered noisy.

Also switch to `gpiod_set_value_cansleep()`, which is safe to use in
sleepable contexts like probe.

Signed-off-by: Salah Triki <salah.triki@...il.com>
---
Changes in v2:
   - Use IS_ERR() instead of IS_ERR_OR_NULL()
   - Drop dev_info()
   - Use gpiod_set_value_cansleep()
   - Improve commit title and message
   
 drivers/iio/pressure/bmp280-core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 74505c9ec1a0..be6c981a4cc7 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -3213,11 +3213,11 @@ int bmp280_common_probe(struct device *dev,
 
 	/* Bring chip out of reset if there is an assigned GPIO line */
 	gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiod))
+		return dev_err_probe(dev, PTR_ERR(gpiod), "failed to get GPIO\n");
+
 	/* Deassert the signal */
-	if (gpiod) {
-		dev_info(dev, "release reset\n");
-		gpiod_set_value(gpiod, 0);
-	}
+	gpiod_set_value_cansleep(gpiod, 0);
 
 	data->regmap = regmap;
 
-- 
2.43.0