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ACPI / gpio: do not fall back to parsing _CRS when we get a deferral

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If, while locating GPIOs by name, we get probe deferral, we should
immediately report it to caller rather than trying to fall back to parsing
unnamed GPIOs from _CRS block.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-and-Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dmitry Torokhov 2017-03-23 13:21:38 -07:00 committed by Linus Walleij
parent 8a146fbe1f
commit 693bdaa164
1 changed files with 3 additions and 1 deletions
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4
drivers/gpio/gpiolib-acpi.c
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@ -577,8 +577,10 @@ struct gpio_desc *acpi_find_gpio(struct device *dev,
}
desc = acpi_get_gpiod_by_index(adev, propname, idx, &info);
if (!IS_ERR(desc) || (PTR_ERR(desc) == -EPROBE_DEFER))
if (!IS_ERR(desc))
break;
if (PTR_ERR(desc) == -EPROBE_DEFER)
return ERR_CAST(desc);
}
/* Then from plain _CRS GPIOs */