if (ACPI_FAILURE(status))
return;
- INIT_LIST_HEAD(&acpi_gpio->events);
acpi_walk_resources(handle, "_AEI",
acpi_gpiochip_request_interrupt, acpi_gpio);
}
break;
}
}
+
+ /*
+ * The same GPIO can be shared between operation region and
+ * event but only if the access here is ACPI_READ. In that
+ * case we "borrow" the event GPIO instead.
+ */
+ if (!found && agpio->sharable == ACPI_SHARED &&
+ function == ACPI_READ) {
+ struct acpi_gpio_event *event;
+
+ list_for_each_entry(event, &achip->events, node) {
+ if (event->pin == pin) {
+ desc = event->desc;
+ found = true;
+ break;
+ }
+ }
+ }
+
if (!found) {
desc = gpiochip_request_own_desc(chip, pin,
"ACPI:OpRegion");
}
acpi_gpio->chip = chip;
+ INIT_LIST_HEAD(&acpi_gpio->events);
status = acpi_attach_data(handle, acpi_gpio_chip_dh, acpi_gpio);
if (ACPI_FAILURE(status)) {