misc/pvpanic: simplify the code using acpi_dev_resource_io
Use acpi_dev_resource_io API.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c
index fd86dab..49c59e1 100644
--- a/drivers/misc/pvpanic.c
+++ b/drivers/misc/pvpanic.c
@@ -77,17 +77,14 @@ static struct notifier_block pvpanic_panic_nb = {
static acpi_status
pvpanic_walk_resources(struct acpi_resource *res, void *context)
{
- switch (res->type) {
- case ACPI_RESOURCE_TYPE_END_TAG:
- return AE_OK;
+ struct resource r;
- case ACPI_RESOURCE_TYPE_IO:
- port = res->data.io.minimum;
+ if (acpi_dev_resource_io(res, &r)) {
+ port = r.start;
return AE_OK;
-
- default:
- return AE_ERROR;
}
+
+ return AE_ERROR;
}
static int pvpanic_add(struct acpi_device *device)