From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Alex Courbot <acourbot@nvidia.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-gpio@vger.kernel.org,
Mathias Nyman <mathias.nyman@linux.intel.com>,
linux-acpi@vger.kernel.org,
Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: [PATCH] gpio / ACPI: return -ENOENT when no mapping exists
Date: Tue, 10 Dec 2013 12:00:27 +0200 [thread overview]
Message-ID: <1386669627-31365-1-git-send-email-mika.westerberg@linux.intel.com> (raw)
Doing this allows drivers to distinguish between a real error case (if
there was an error when we tried to resolve the GPIO) and when the optional
GPIO line was not available.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/gpio/gpiolib-acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 8506e4ce41f7..716ee9843110 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -307,7 +307,7 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
if (lookup.desc && info)
*info = lookup.info;
- return lookup.desc ? lookup.desc : ERR_PTR(-ENODEV);
+ return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT);
}
void acpi_gpiochip_add(struct gpio_chip *chip)
--
1.8.5.1
next reply other threads:[~2013-12-10 10:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-10 10:00 Mika Westerberg [this message]
2013-12-10 11:11 ` [PATCH] gpio / ACPI: return -ENOENT when no mapping exists Alex Courbot
2013-12-12 1:39 ` Rafael J. Wysocki
2013-12-12 20:57 ` Linus Walleij
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