gpiolib: acpi: Respect bias settings for GpioInt() resource

In some cases the GpioInt() resource is coming with bias settings
which may affect system functioning. Respect bias settings for
GpioInt() resource by calling acpi_gpio_update_gpiod_*flags() API
in acpi_dev_gpio_irq_get().

Reported-by: Jamie McClymont <jamie@kwiius.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 834a12f..3a39e8a 100644 (file)
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -942,6 +942,7 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
 
                if (info.gpioint && idx++ == index) {
                        unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
+                       enum gpiod_flags dflags = GPIOD_ASIS;
                        char label[32];
                        int irq;
 
@@ -952,8 +953,11 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
                        if (irq < 0)
                                return irq;
 
+                       acpi_gpio_update_gpiod_flags(&dflags, &info);
+                       acpi_gpio_update_gpiod_lookup_flags(&lflags, &info);
+
                        snprintf(label, sizeof(label), "GpioInt() %d", index);
-                       ret = gpiod_configure_flags(desc, label, lflags, info.flags);
+                       ret = gpiod_configure_flags(desc, label, lflags, dflags);
                        if (ret < 0)
                                return ret;