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authorMika Westerberg <mika.westerberg@linux.intel.com>2013-12-10 12:00:27 +0200
committerLinus Walleij <linus.walleij@linaro.org>2013-12-12 21:56:36 +0100
commita00580c2809f44fd1d284bf2638395a261d28cc9 (patch)
treea7a161ccfe37bf1ee01c8968b338ff6091ab7343 /drivers/gpio/gpiolib-acpi.c
parentfcffa97f8e182306cf76f101ccb3b397399da772 (diff)
downloadblackbird-op-linux-a00580c2809f44fd1d284bf2638395a261d28cc9.tar.gz
blackbird-op-linux-a00580c2809f44fd1d284bf2638395a261d28cc9.zip
gpio / ACPI: return -ENOENT when no mapping exists
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> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r--drivers/gpio/gpiolib-acpi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index ae0ffdce8bd5..137d20c70afe 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -307,6 +307,6 @@ 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);
}
EXPORT_SYMBOL_GPL(acpi_get_gpiod_by_index);
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