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From: Stefan Wahren <wahrenst@gmx.net>
To: Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Pavel Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>
Cc: bcm-kernel-feedback-list@broadcom.com,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-leds@vger.kernel.org, Stefan Wahren <wahrenst@gmx.net>
Subject: [PATCH 1/2] leds: gpio: Add kernel log if devm_fwnode_gpiod_get fails
Date: Sun,  5 Nov 2023 16:49:39 +0100	[thread overview]
Message-ID: <20231105154940.97688-2-wahrenst@gmx.net> (raw)
In-Reply-To: <20231105154940.97688-1-wahrenst@gmx.net>

In case leds-gpio fails to get the GPIO from the DT (e.g. the GPIO is
already requested) the driver doesn't provide any helpful error log:

    leds-gpio: probe of leds failed with error -16

So add a new error log in case devm_fwnode_gpiod_get() fails.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
 drivers/leds/leds-gpio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 710c319ad312..284a9e66fd9e 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -172,6 +172,8 @@ static struct gpio_leds_priv *gpio_leds_create(struct device *dev)
 		led.gpiod = devm_fwnode_gpiod_get(dev, child, NULL, GPIOD_ASIS,
 						  NULL);
 		if (IS_ERR(led.gpiod)) {
+			dev_err(dev, "Failed to get gpio '%pfw': %ld\n",
+				child, PTR_ERR(led.gpiod));
 			fwnode_handle_put(child);
 			return ERR_CAST(led.gpiod);
 		}
--
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Stefan Wahren <wahrenst@gmx.net>
To: Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Pavel Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>
Cc: bcm-kernel-feedback-list@broadcom.com,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-leds@vger.kernel.org, Stefan Wahren <wahrenst@gmx.net>
Subject: [PATCH 1/2] leds: gpio: Add kernel log if devm_fwnode_gpiod_get fails
Date: Sun,  5 Nov 2023 16:49:39 +0100	[thread overview]
Message-ID: <20231105154940.97688-2-wahrenst@gmx.net> (raw)
In-Reply-To: <20231105154940.97688-1-wahrenst@gmx.net>

In case leds-gpio fails to get the GPIO from the DT (e.g. the GPIO is
already requested) the driver doesn't provide any helpful error log:

    leds-gpio: probe of leds failed with error -16

So add a new error log in case devm_fwnode_gpiod_get() fails.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
 drivers/leds/leds-gpio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 710c319ad312..284a9e66fd9e 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -172,6 +172,8 @@ static struct gpio_leds_priv *gpio_leds_create(struct device *dev)
 		led.gpiod = devm_fwnode_gpiod_get(dev, child, NULL, GPIOD_ASIS,
 						  NULL);
 		if (IS_ERR(led.gpiod)) {
+			dev_err(dev, "Failed to get gpio '%pfw': %ld\n",
+				child, PTR_ERR(led.gpiod));
 			fwnode_handle_put(child);
 			return ERR_CAST(led.gpiod);
 		}
--
2.34.1


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-11-05 15:50 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-05 15:49 [PATCH 0/2] ARM: dts: bcm2711-rpi-400: Fix delete-node of led_act Stefan Wahren
2023-11-05 15:49 ` Stefan Wahren
2023-11-05 15:49 ` Stefan Wahren [this message]
2023-11-05 15:49   ` [PATCH 1/2] leds: gpio: Add kernel log if devm_fwnode_gpiod_get fails Stefan Wahren
2023-11-06 11:19   ` Andy Shevchenko
2023-11-06 11:19     ` Andy Shevchenko
2023-11-18 12:31     ` Stefan Wahren
2023-11-18 12:31       ` Stefan Wahren
2023-11-05 15:49 ` [PATCH 2/2] ARM: dts: bcm2711-rpi-400: Fix delete-node of led_act Stefan Wahren
2023-11-05 15:49   ` Stefan Wahren

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